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Finding the Fourth Proportional to 524.80, 787.28 and 159.52

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Solution

The fourth proportional to 524.80, 787.28 and 159.52 is: 239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.80 : 787.28 = 159.52 : x
  2. Step 2: Convert to fraction form
    524.80/787.28 = 159.52/x
  3. Step 3: Cross multiply
    524.80x = 787.28 × 159.52
  4. Step 4: Simplify right side
    524.80x = 125,586.91
  5. Step 5: Solve for x
    x = 125,586.91/524.80
  6. Step 6: Final answer
    x = 239.30

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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.