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Finding the Fourth Proportional to 585.62, 878.12 and 342.22

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Solution

The fourth proportional to 585.62, 878.12 and 342.22 is: 513.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.62 : 878.12 = 342.22 : x
  2. Step 2: Convert to fraction form
    585.62/878.12 = 342.22/x
  3. Step 3: Cross multiply
    585.62x = 878.12 × 342.22
  4. Step 4: Simplify right side
    585.62x = 300,510.23
  5. Step 5: Solve for x
    x = 300,510.23/585.62
  6. Step 6: Final answer
    x = 513.15

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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.