Home / 1,032.20-1,424.57-633.90

Finding the Fourth Proportional to 1,032.20, 1,424.57 and 633.90

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Solution

The fourth proportional to 1,032.20, 1,424.57 and 633.90 is: 874.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.20 : 1,424.57 = 633.90 : x
  2. Step 2: Convert to fraction form
    1,032.20/1,424.57 = 633.90/x
  3. Step 3: Cross multiply
    1,032.20x = 1,424.57 × 633.90
  4. Step 4: Simplify right side
    1,032.20x = 903,031.75
  5. Step 5: Solve for x
    x = 903,031.75/1,032.20
  6. Step 6: Final answer
    x = 874.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.