Home / 1,487.14-2,231.01-447.10

Finding the Fourth Proportional to 1,487.14, 2,231.01 and 447.10

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Solution

The fourth proportional to 1,487.14, 2,231.01 and 447.10 is: 670.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.14 : 2,231.01 = 447.10 : x
  2. Step 2: Convert to fraction form
    1,487.14/2,231.01 = 447.10/x
  3. Step 3: Cross multiply
    1,487.14x = 2,231.01 × 447.10
  4. Step 4: Simplify right side
    1,487.14x = 997,484.57
  5. Step 5: Solve for x
    x = 997,484.57/1,487.14
  6. Step 6: Final answer
    x = 670.74

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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.