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Finding the Fourth Proportional to 590.33, 885.45 and 499.21

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Solution

The fourth proportional to 590.33, 885.45 and 499.21 is: 748.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.33 : 885.45 = 499.21 : x
  2. Step 2: Convert to fraction form
    590.33/885.45 = 499.21/x
  3. Step 3: Cross multiply
    590.33x = 885.45 × 499.21
  4. Step 4: Simplify right side
    590.33x = 442,025.49
  5. Step 5: Solve for x
    x = 442,025.49/590.33
  6. Step 6: Final answer
    x = 748.78

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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.