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Finding the Fourth Proportional to 585.76, 878.58 and 239.12

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Solution

The fourth proportional to 585.76, 878.58 and 239.12 is: 358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.76 : 878.58 = 239.12 : x
  2. Step 2: Convert to fraction form
    585.76/878.58 = 239.12/x
  3. Step 3: Cross multiply
    585.76x = 878.58 × 239.12
  4. Step 4: Simplify right side
    585.76x = 210,090.57
  5. Step 5: Solve for x
    x = 210,090.57/585.76
  6. Step 6: Final answer
    x = 358.66

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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.