Home / 1,255.12-1,882.20-433.14

Finding the Fourth Proportional to 1,255.12, 1,882.20 and 433.14

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Solution

The fourth proportional to 1,255.12, 1,882.20 and 433.14 is: 649.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.12 : 1,882.20 = 433.14 : x
  2. Step 2: Convert to fraction form
    1,255.12/1,882.20 = 433.14/x
  3. Step 3: Cross multiply
    1,255.12x = 1,882.20 × 433.14
  4. Step 4: Simplify right side
    1,255.12x = 815,256.11
  5. Step 5: Solve for x
    x = 815,256.11/1,255.12
  6. Step 6: Final answer
    x = 649.54

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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.