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Finding the Fourth Proportional to 575.62, 861.45 and 498.22

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Solution

The fourth proportional to 575.62, 861.45 and 498.22 is: 745.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.62 : 861.45 = 498.22 : x
  2. Step 2: Convert to fraction form
    575.62/861.45 = 498.22/x
  3. Step 3: Cross multiply
    575.62x = 861.45 × 498.22
  4. Step 4: Simplify right side
    575.62x = 429,191.62
  5. Step 5: Solve for x
    x = 429,191.62/575.62
  6. Step 6: Final answer
    x = 745.62

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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.