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Finding the Fourth Proportional to 610.07, 842.02 and 388.97

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Solution

The fourth proportional to 610.07, 842.02 and 388.97 is: 536.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.07 : 842.02 = 388.97 : x
  2. Step 2: Convert to fraction form
    610.07/842.02 = 388.97/x
  3. Step 3: Cross multiply
    610.07x = 842.02 × 388.97
  4. Step 4: Simplify right side
    610.07x = 327,520.52
  5. Step 5: Solve for x
    x = 327,520.52/610.07
  6. Step 6: Final answer
    x = 536.86

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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.