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Finding the Fourth Proportional to 1,254.85, 1,882.45 and 432.91

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Solution

The fourth proportional to 1,254.85, 1,882.45 and 432.91 is: 649.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.85 : 1,882.45 = 432.91 : x
  2. Step 2: Convert to fraction form
    1,254.85/1,882.45 = 432.91/x
  3. Step 3: Cross multiply
    1,254.85x = 1,882.45 × 432.91
  4. Step 4: Simplify right side
    1,254.85x = 814,931.43
  5. Step 5: Solve for x
    x = 814,931.43/1,254.85
  6. Step 6: Final answer
    x = 649.43

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Double scale
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1.5x scale

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.