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Finding the Fourth Proportional to 896.65, 1,237.39 and 672.19

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Solution

The fourth proportional to 896.65, 1,237.39 and 672.19 is: 927.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.65 : 1,237.39 = 672.19 : x
  2. Step 2: Convert to fraction form
    896.65/1,237.39 = 672.19/x
  3. Step 3: Cross multiply
    896.65x = 1,237.39 × 672.19
  4. Step 4: Simplify right side
    896.65x = 831,761.18
  5. Step 5: Solve for x
    x = 831,761.18/896.65
  6. Step 6: Final answer
    x = 927.63

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Double scale
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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.