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Finding the Fourth Proportional to 1,029.86, 1,543.70 and 481.59

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Solution

The fourth proportional to 1,029.86, 1,543.70 and 481.59 is: 721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.86 : 1,543.70 = 481.59 : x
  2. Step 2: Convert to fraction form
    1,029.86/1,543.70 = 481.59/x
  3. Step 3: Cross multiply
    1,029.86x = 1,543.70 × 481.59
  4. Step 4: Simplify right side
    1,029.86x = 743,431.69
  5. Step 5: Solve for x
    x = 743,431.69/1,029.86
  6. Step 6: Final answer
    x = 721.88

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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.