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Finding the Fourth Proportional to 610.20, 841.68 and 386.04

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Solution

The fourth proportional to 610.20, 841.68 and 386.04 is: 532.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.20 : 841.68 = 386.04 : x
  2. Step 2: Convert to fraction form
    610.20/841.68 = 386.04/x
  3. Step 3: Cross multiply
    610.20x = 841.68 × 386.04
  4. Step 4: Simplify right side
    610.20x = 324,922.15
  5. Step 5: Solve for x
    x = 324,922.15/610.20
  6. Step 6: Final answer
    x = 532.48

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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.