Home / 1,254.20-1,881.44-432.65

Finding the Fourth Proportional to 1,254.20, 1,881.44 and 432.65

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Solution

The fourth proportional to 1,254.20, 1,881.44 and 432.65 is: 649.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.20 : 1,881.44 = 432.65 : x
  2. Step 2: Convert to fraction form
    1,254.20/1,881.44 = 432.65/x
  3. Step 3: Cross multiply
    1,254.20x = 1,881.44 × 432.65
  4. Step 4: Simplify right side
    1,254.20x = 814,010.80
  5. Step 5: Solve for x
    x = 814,010.80/1,254.20
  6. Step 6: Final answer
    x = 649.03

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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.