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Finding the Fourth Proportional to 585.48, 878.34 and 482.88

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Solution

The fourth proportional to 585.48, 878.34 and 482.88 is: 724.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.48 : 878.34 = 482.88 : x
  2. Step 2: Convert to fraction form
    585.48/878.34 = 482.88/x
  3. Step 3: Cross multiply
    585.48x = 878.34 × 482.88
  4. Step 4: Simplify right side
    585.48x = 424,132.82
  5. Step 5: Solve for x
    x = 424,132.82/585.48
  6. Step 6: Final answer
    x = 724.42

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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.