Home / 1,472.28-2,207.91-431.98

Finding the Fourth Proportional to 1,472.28, 2,207.91 and 431.98

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Solution

The fourth proportional to 1,472.28, 2,207.91 and 431.98 is: 647.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.28 : 2,207.91 = 431.98 : x
  2. Step 2: Convert to fraction form
    1,472.28/2,207.91 = 431.98/x
  3. Step 3: Cross multiply
    1,472.28x = 2,207.91 × 431.98
  4. Step 4: Simplify right side
    1,472.28x = 953,779.05
  5. Step 5: Solve for x
    x = 953,779.05/1,472.28
  6. Step 6: Final answer
    x = 647.83

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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.