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Finding the Fourth Proportional to 549.64, 824.46 and 260.92

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Solution

The fourth proportional to 549.64, 824.46 and 260.92 is: 391.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.64 : 824.46 = 260.92 : x
  2. Step 2: Convert to fraction form
    549.64/824.46 = 260.92/x
  3. Step 3: Cross multiply
    549.64x = 824.46 × 260.92
  4. Step 4: Simplify right side
    549.64x = 215,118.10
  5. Step 5: Solve for x
    x = 215,118.10/549.64
  6. Step 6: Final answer
    x = 391.38

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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.