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Finding the Fourth Proportional to 528.91, 792.62 and 499.70

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Solution

The fourth proportional to 528.91, 792.62 and 499.70 is: 748.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.91 : 792.62 = 499.70 : x
  2. Step 2: Convert to fraction form
    528.91/792.62 = 499.70/x
  3. Step 3: Cross multiply
    528.91x = 792.62 × 499.70
  4. Step 4: Simplify right side
    528.91x = 396,069.72
  5. Step 5: Solve for x
    x = 396,069.72/528.91
  6. Step 6: Final answer
    x = 748.85

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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.