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Finding the Fourth Proportional to 494.60, 741.39 and 220.55

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Solution

The fourth proportional to 494.60, 741.39 and 220.55 is: 330.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.60 : 741.39 = 220.55 : x
  2. Step 2: Convert to fraction form
    494.60/741.39 = 220.55/x
  3. Step 3: Cross multiply
    494.60x = 741.39 × 220.55
  4. Step 4: Simplify right side
    494.60x = 163,509.86
  5. Step 5: Solve for x
    x = 163,509.86/494.60
  6. Step 6: Final answer
    x = 330.59

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