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Finding the Fourth Proportional to 199.56, 275.28 and 147.11

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Solution

The fourth proportional to 199.56, 275.28 and 147.11 is: 202.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.56 : 275.28 = 147.11 : x
  2. Step 2: Convert to fraction form
    199.56/275.28 = 147.11/x
  3. Step 3: Cross multiply
    199.56x = 275.28 × 147.11
  4. Step 4: Simplify right side
    199.56x = 40,496.44
  5. Step 5: Solve for x
    x = 40,496.44/199.56
  6. Step 6: Final answer
    x = 202.93

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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.