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Finding the Fourth Proportional to 543.05, 814.64 and 177.76

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Solution

The fourth proportional to 543.05, 814.64 and 177.76 is: 266.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.05 : 814.64 = 177.76 : x
  2. Step 2: Convert to fraction form
    543.05/814.64 = 177.76/x
  3. Step 3: Cross multiply
    543.05x = 814.64 × 177.76
  4. Step 4: Simplify right side
    543.05x = 144,805.95
  5. Step 5: Solve for x
    x = 144,805.95/543.05
  6. Step 6: Final answer
    x = 266.65

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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.