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Finding the Fourth Proportional to 565.32, 845.72 and 489.11

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Solution

The fourth proportional to 565.32, 845.72 and 489.11 is: 731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.32 : 845.72 = 489.11 : x
  2. Step 2: Convert to fraction form
    565.32/845.72 = 489.11/x
  3. Step 3: Cross multiply
    565.32x = 845.72 × 489.11
  4. Step 4: Simplify right side
    565.32x = 413,643.44
  5. Step 5: Solve for x
    x = 413,643.44/565.32
  6. Step 6: Final answer
    x = 731.70

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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.