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Finding the Fourth Proportional to 1,027.70, 1,540.17 and 377.78

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Solution

The fourth proportional to 1,027.70, 1,540.17 and 377.78 is: 566.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.70 : 1,540.17 = 377.78 : x
  2. Step 2: Convert to fraction form
    1,027.70/1,540.17 = 377.78/x
  3. Step 3: Cross multiply
    1,027.70x = 1,540.17 × 377.78
  4. Step 4: Simplify right side
    1,027.70x = 581,845.42
  5. Step 5: Solve for x
    x = 581,845.42/1,027.70
  6. Step 6: Final answer
    x = 566.16

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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.