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Finding the Fourth Proportional to 610.80, 842.60 and 527.88

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Solution

The fourth proportional to 610.80, 842.60 and 527.88 is: 728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.80 : 842.60 = 527.88 : x
  2. Step 2: Convert to fraction form
    610.80/842.60 = 527.88/x
  3. Step 3: Cross multiply
    610.80x = 842.60 × 527.88
  4. Step 4: Simplify right side
    610.80x = 444,791.69
  5. Step 5: Solve for x
    x = 444,791.69/610.80
  6. Step 6: Final answer
    x = 728.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.