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Finding the Fourth Proportional to 637.31, 954.11 and 393.09

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Solution

The fourth proportional to 637.31, 954.11 and 393.09 is: 588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.31 : 954.11 = 393.09 : x
  2. Step 2: Convert to fraction form
    637.31/954.11 = 393.09/x
  3. Step 3: Cross multiply
    637.31x = 954.11 × 393.09
  4. Step 4: Simplify right side
    637.31x = 375,049.13
  5. Step 5: Solve for x
    x = 375,049.13/637.31
  6. Step 6: Final answer
    x = 588.49

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.