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Finding the Fourth Proportional to 560.39, 840.24 and 267.88

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Solution

The fourth proportional to 560.39, 840.24 and 267.88 is: 401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.39 : 840.24 = 267.88 : x
  2. Step 2: Convert to fraction form
    560.39/840.24 = 267.88/x
  3. Step 3: Cross multiply
    560.39x = 840.24 × 267.88
  4. Step 4: Simplify right side
    560.39x = 225,082.15
  5. Step 5: Solve for x
    x = 225,082.15/560.39
  6. Step 6: Final answer
    x = 401.65

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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.