Home / 1,487.50-2,231.60-447.46

Finding the Fourth Proportional to 1,487.50, 2,231.60 and 447.46

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Solution

The fourth proportional to 1,487.50, 2,231.60 and 447.46 is: 671.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.50 : 2,231.60 = 447.46 : x
  2. Step 2: Convert to fraction form
    1,487.50/2,231.60 = 447.46/x
  3. Step 3: Cross multiply
    1,487.50x = 2,231.60 × 447.46
  4. Step 4: Simplify right side
    1,487.50x = 998,543.92
  5. Step 5: Solve for x
    x = 998,543.92/1,487.50
  6. Step 6: Final answer
    x = 671.29

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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.