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Finding the Fourth Proportional to 586.05, 878.59 and 402.90

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Solution

The fourth proportional to 586.05, 878.59 and 402.90 is: 604.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.05 : 878.59 = 402.90 : x
  2. Step 2: Convert to fraction form
    586.05/878.59 = 402.90/x
  3. Step 3: Cross multiply
    586.05x = 878.59 × 402.90
  4. Step 4: Simplify right side
    586.05x = 353,983.91
  5. Step 5: Solve for x
    x = 353,983.91/586.05
  6. Step 6: Final answer
    x = 604.02

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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.