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Finding the Fourth Proportional to 762.32, 1,051.11 and 563.43

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Solution

The fourth proportional to 762.32, 1,051.11 and 563.43 is: 776.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.32 : 1,051.11 = 563.43 : x
  2. Step 2: Convert to fraction form
    762.32/1,051.11 = 563.43/x
  3. Step 3: Cross multiply
    762.32x = 1,051.11 × 563.43
  4. Step 4: Simplify right side
    762.32x = 592,226.91
  5. Step 5: Solve for x
    x = 592,226.91/762.32
  6. Step 6: Final answer
    x = 776.88

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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.