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Finding the Fourth Proportional to 482.85, 724.61 and 235.79

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Solution

The fourth proportional to 482.85, 724.61 and 235.79 is: 353.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.85 : 724.61 = 235.79 : x
  2. Step 2: Convert to fraction form
    482.85/724.61 = 235.79/x
  3. Step 3: Cross multiply
    482.85x = 724.61 × 235.79
  4. Step 4: Simplify right side
    482.85x = 170,853.93
  5. Step 5: Solve for x
    x = 170,853.93/482.85
  6. Step 6: Final answer
    x = 353.85

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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.