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Finding the Fourth Proportional to 585.95, 878.92 and 402.78

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Solution

The fourth proportional to 585.95, 878.92 and 402.78 is: 604.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.95 : 878.92 = 402.78 : x
  2. Step 2: Convert to fraction form
    585.95/878.92 = 402.78/x
  3. Step 3: Cross multiply
    585.95x = 878.92 × 402.78
  4. Step 4: Simplify right side
    585.95x = 354,013.69
  5. Step 5: Solve for x
    x = 354,013.69/585.95
  6. Step 6: Final answer
    x = 604.18

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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.