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Finding the Fourth Proportional to 498.16, 747.54 and 281.80

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Solution

The fourth proportional to 498.16, 747.54 and 281.80 is: 422.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.16 : 747.54 = 281.80 : x
  2. Step 2: Convert to fraction form
    498.16/747.54 = 281.80/x
  3. Step 3: Cross multiply
    498.16x = 747.54 × 281.80
  4. Step 4: Simplify right side
    498.16x = 210,656.77
  5. Step 5: Solve for x
    x = 210,656.77/498.16
  6. Step 6: Final answer
    x = 422.87

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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.