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Finding the Fourth Proportional to 199.44, 275.20 and 116.53

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Solution

The fourth proportional to 199.44, 275.20 and 116.53 is: 160.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.44 : 275.20 = 116.53 : x
  2. Step 2: Convert to fraction form
    199.44/275.20 = 116.53/x
  3. Step 3: Cross multiply
    199.44x = 275.20 × 116.53
  4. Step 4: Simplify right side
    199.44x = 32,068.08
  5. Step 5: Solve for x
    x = 32,068.08/199.44
  6. Step 6: Final answer
    x = 160.79

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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.