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Finding the Fourth Proportional to 610.09, 842 and 400.44

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Solution

The fourth proportional to 610.09, 842 and 400.44 is: 552.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.09 : 842 = 400.44 : x
  2. Step 2: Convert to fraction form
    610.09/842 = 400.44/x
  3. Step 3: Cross multiply
    610.09x = 842 × 400.44
  4. Step 4: Simplify right side
    610.09x = 337,170.48
  5. Step 5: Solve for x
    x = 337,170.48/610.09
  6. Step 6: Final answer
    x = 552.66

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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.