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Finding the Fourth Proportional to 494.10, 741.15 and 220.11

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Solution

The fourth proportional to 494.10, 741.15 and 220.11 is: 330.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.10 : 741.15 = 220.11 : x
  2. Step 2: Convert to fraction form
    494.10/741.15 = 220.11/x
  3. Step 3: Cross multiply
    494.10x = 741.15 × 220.11
  4. Step 4: Simplify right side
    494.10x = 163,134.53
  5. Step 5: Solve for x
    x = 163,134.53/494.10
  6. Step 6: Final answer
    x = 330.17

Related Problems

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Double scale
Find fourth proportional to 495.10, 742.65 and 221.11
Similar ratio
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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.