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Finding the Fourth Proportional to 488.72, 732.42 and 282.86

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Solution

The fourth proportional to 488.72, 732.42 and 282.86 is: 423.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.72 : 732.42 = 282.86 : x
  2. Step 2: Convert to fraction form
    488.72/732.42 = 282.86/x
  3. Step 3: Cross multiply
    488.72x = 732.42 × 282.86
  4. Step 4: Simplify right side
    488.72x = 207,172.32
  5. Step 5: Solve for x
    x = 207,172.32/488.72
  6. Step 6: Final answer
    x = 423.91

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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.