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Finding the Fourth Proportional to 895.65, 1,236.01 and 671.19

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Solution

The fourth proportional to 895.65, 1,236.01 and 671.19 is: 926.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.65 : 1,236.01 = 671.19 : x
  2. Step 2: Convert to fraction form
    895.65/1,236.01 = 671.19/x
  3. Step 3: Cross multiply
    895.65x = 1,236.01 × 671.19
  4. Step 4: Simplify right side
    895.65x = 829,597.55
  5. Step 5: Solve for x
    x = 829,597.55/895.65
  6. Step 6: Final answer
    x = 926.25

Related Problems

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Half scale
Find fourth proportional to 1,791.30, 2,472.02 and 1,342.38
Double scale
Find fourth proportional to 896.65, 1,237.39 and 672.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.