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Finding the Fourth Proportional to 610.34, 842.42 and 411.20

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Solution

The fourth proportional to 610.34, 842.42 and 411.20 is: 567.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.34 : 842.42 = 411.20 : x
  2. Step 2: Convert to fraction form
    610.34/842.42 = 411.20/x
  3. Step 3: Cross multiply
    610.34x = 842.42 × 411.20
  4. Step 4: Simplify right side
    610.34x = 346,403.10
  5. Step 5: Solve for x
    x = 346,403.10/610.34
  6. Step 6: Final answer
    x = 567.56

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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.