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Finding the Fourth Proportional to 610.44, 842.45 and 479.22

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Solution

The fourth proportional to 610.44, 842.45 and 479.22 is: 661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.44 : 842.45 = 479.22 : x
  2. Step 2: Convert to fraction form
    610.44/842.45 = 479.22/x
  3. Step 3: Cross multiply
    610.44x = 842.45 × 479.22
  4. Step 4: Simplify right side
    610.44x = 403,716.49
  5. Step 5: Solve for x
    x = 403,716.49/610.44
  6. Step 6: Final answer
    x = 661.35

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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.