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Finding the Fourth Proportional to 1,027.12, 1,540.74 and 296.70

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Solution

The fourth proportional to 1,027.12, 1,540.74 and 296.70 is: 445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.12 : 1,540.74 = 296.70 : x
  2. Step 2: Convert to fraction form
    1,027.12/1,540.74 = 296.70/x
  3. Step 3: Cross multiply
    1,027.12x = 1,540.74 × 296.70
  4. Step 4: Simplify right side
    1,027.12x = 457,137.56
  5. Step 5: Solve for x
    x = 457,137.56/1,027.12
  6. Step 6: Final answer
    x = 445.07

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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.