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Finding the Fourth Proportional to 659.72, 994.04 and 546.72

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Solution

The fourth proportional to 659.72, 994.04 and 546.72 is: 823.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.72 : 994.04 = 546.72 : x
  2. Step 2: Convert to fraction form
    659.72/994.04 = 546.72/x
  3. Step 3: Cross multiply
    659.72x = 994.04 × 546.72
  4. Step 4: Simplify right side
    659.72x = 543,461.55
  5. Step 5: Solve for x
    x = 543,461.55/659.72
  6. Step 6: Final answer
    x = 823.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.