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Finding the Fourth Proportional to 631.96, 872.52 and 565.36

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Solution

The fourth proportional to 631.96, 872.52 and 565.36 is: 780.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.96 : 872.52 = 565.36 : x
  2. Step 2: Convert to fraction form
    631.96/872.52 = 565.36/x
  3. Step 3: Cross multiply
    631.96x = 872.52 × 565.36
  4. Step 4: Simplify right side
    631.96x = 493,287.91
  5. Step 5: Solve for x
    x = 493,287.91/631.96
  6. Step 6: Final answer
    x = 780.57

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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.