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Finding the Fourth Proportional to 610.24, 842.82 and 487.24

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Solution

The fourth proportional to 610.24, 842.82 and 487.24 is: 672.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.24 : 842.82 = 487.24 : x
  2. Step 2: Convert to fraction form
    610.24/842.82 = 487.24/x
  3. Step 3: Cross multiply
    610.24x = 842.82 × 487.24
  4. Step 4: Simplify right side
    610.24x = 410,655.62
  5. Step 5: Solve for x
    x = 410,655.62/610.24
  6. Step 6: Final answer
    x = 672.94

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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.