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Finding the Fourth Proportional to 542.11, 812.65 and 176.64

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Solution

The fourth proportional to 542.11, 812.65 and 176.64 is: 264.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.11 : 812.65 = 176.64 : x
  2. Step 2: Convert to fraction form
    542.11/812.65 = 176.64/x
  3. Step 3: Cross multiply
    542.11x = 812.65 × 176.64
  4. Step 4: Simplify right side
    542.11x = 143,546.50
  5. Step 5: Solve for x
    x = 143,546.50/542.11
  6. Step 6: Final answer
    x = 264.79

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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.