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Finding the Fourth Proportional to 494.25, 741.75 and 220.57

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Solution

The fourth proportional to 494.25, 741.75 and 220.57 is: 331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.25 : 741.75 = 220.57 : x
  2. Step 2: Convert to fraction form
    494.25/741.75 = 220.57/x
  3. Step 3: Cross multiply
    494.25x = 741.75 × 220.57
  4. Step 4: Simplify right side
    494.25x = 163,607.80
  5. Step 5: Solve for x
    x = 163,607.80/494.25
  6. Step 6: Final answer
    x = 331.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.