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Finding the Fourth Proportional to 588.78, 883.08 and 280.40

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Solution

The fourth proportional to 588.78, 883.08 and 280.40 is: 420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.78 : 883.08 = 280.40 : x
  2. Step 2: Convert to fraction form
    588.78/883.08 = 280.40/x
  3. Step 3: Cross multiply
    588.78x = 883.08 × 280.40
  4. Step 4: Simplify right side
    588.78x = 247,611.22
  5. Step 5: Solve for x
    x = 247,611.22/588.78
  6. Step 6: Final answer
    x = 420.55

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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.