Home / 1,377.40-2,066.34-452.70

Finding the Fourth Proportional to 1,377.40, 2,066.34 and 452.70

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Solution

The fourth proportional to 1,377.40, 2,066.34 and 452.70 is: 679.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.40 : 2,066.34 = 452.70 : x
  2. Step 2: Convert to fraction form
    1,377.40/2,066.34 = 452.70/x
  3. Step 3: Cross multiply
    1,377.40x = 2,066.34 × 452.70
  4. Step 4: Simplify right side
    1,377.40x = 935,432.12
  5. Step 5: Solve for x
    x = 935,432.12/1,377.40
  6. Step 6: Final answer
    x = 679.13

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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.