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Finding the Fourth Proportional to 588.32, 882.68 and 280.40

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Solution

The fourth proportional to 588.32, 882.68 and 280.40 is: 420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.32 : 882.68 = 280.40 : x
  2. Step 2: Convert to fraction form
    588.32/882.68 = 280.40/x
  3. Step 3: Cross multiply
    588.32x = 882.68 × 280.40
  4. Step 4: Simplify right side
    588.32x = 247,503.47
  5. Step 5: Solve for x
    x = 247,503.47/588.32
  6. Step 6: Final answer
    x = 420.70

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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.