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Finding the Fourth Proportional to 563.32, 842.72 and 487.10

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Solution

The fourth proportional to 563.32, 842.72 and 487.10 is: 728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.32 : 842.72 = 487.10 : x
  2. Step 2: Convert to fraction form
    563.32/842.72 = 487.10/x
  3. Step 3: Cross multiply
    563.32x = 842.72 × 487.10
  4. Step 4: Simplify right side
    563.32x = 410,488.91
  5. Step 5: Solve for x
    x = 410,488.91/563.32
  6. Step 6: Final answer
    x = 728.70

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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.