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Finding the Fourth Proportional to 498.15, 748.85 and 495.72

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Solution

The fourth proportional to 498.15, 748.85 and 495.72 is: 745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.15 : 748.85 = 495.72 : x
  2. Step 2: Convert to fraction form
    498.15/748.85 = 495.72/x
  3. Step 3: Cross multiply
    498.15x = 748.85 × 495.72
  4. Step 4: Simplify right side
    498.15x = 371,217.44
  5. Step 5: Solve for x
    x = 371,217.44/498.15
  6. Step 6: Final answer
    x = 745.19

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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.