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Finding the Fourth Proportional to 631.56, 943.53 and 627.96

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Solution

The fourth proportional to 631.56, 943.53 and 627.96 is: 938.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.56 : 943.53 = 627.96 : x
  2. Step 2: Convert to fraction form
    631.56/943.53 = 627.96/x
  3. Step 3: Cross multiply
    631.56x = 943.53 × 627.96
  4. Step 4: Simplify right side
    631.56x = 592,499.10
  5. Step 5: Solve for x
    x = 592,499.10/631.56
  6. Step 6: Final answer
    x = 938.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.