Home / 1,521.31-2,281.98-481.29

Finding the Fourth Proportional to 1,521.31, 2,281.98 and 481.29

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Solution

The fourth proportional to 1,521.31, 2,281.98 and 481.29 is: 721.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.31 : 2,281.98 = 481.29 : x
  2. Step 2: Convert to fraction form
    1,521.31/2,281.98 = 481.29/x
  3. Step 3: Cross multiply
    1,521.31x = 2,281.98 × 481.29
  4. Step 4: Simplify right side
    1,521.31x = 1,098,299.86
  5. Step 5: Solve for x
    x = 1,098,299.86/1,521.31
  6. Step 6: Final answer
    x = 721.94

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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.