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Finding the Fourth Proportional to 895.38, 1,236.18 and 615.51

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Solution

The fourth proportional to 895.38, 1,236.18 and 615.51 is: 849.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.38 : 1,236.18 = 615.51 : x
  2. Step 2: Convert to fraction form
    895.38/1,236.18 = 615.51/x
  3. Step 3: Cross multiply
    895.38x = 1,236.18 × 615.51
  4. Step 4: Simplify right side
    895.38x = 760,881.15
  5. Step 5: Solve for x
    x = 760,881.15/895.38
  6. Step 6: Final answer
    x = 849.79

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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.