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Finding the Fourth Proportional to 762.23, 1,052.34 and 500.71

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Solution

The fourth proportional to 762.23, 1,052.34 and 500.71 is: 691.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.23 : 1,052.34 = 500.71 : x
  2. Step 2: Convert to fraction form
    762.23/1,052.34 = 500.71/x
  3. Step 3: Cross multiply
    762.23x = 1,052.34 × 500.71
  4. Step 4: Simplify right side
    762.23x = 526,917.16
  5. Step 5: Solve for x
    x = 526,917.16/762.23
  6. Step 6: Final answer
    x = 691.28

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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.