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Finding the Fourth Proportional to 927.98, 1,280.61 and 529.62

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Solution

The fourth proportional to 927.98, 1,280.61 and 529.62 is: 730.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.98 : 1,280.61 = 529.62 : x
  2. Step 2: Convert to fraction form
    927.98/1,280.61 = 529.62/x
  3. Step 3: Cross multiply
    927.98x = 1,280.61 × 529.62
  4. Step 4: Simplify right side
    927.98x = 678,234.02
  5. Step 5: Solve for x
    x = 678,234.02/927.98
  6. Step 6: Final answer
    x = 730.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.