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Finding the Fourth Proportional to 202.76, 279.68 and 147.38

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Solution

The fourth proportional to 202.76, 279.68 and 147.38 is: 203.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.76 : 279.68 = 147.38 : x
  2. Step 2: Convert to fraction form
    202.76/279.68 = 147.38/x
  3. Step 3: Cross multiply
    202.76x = 279.68 × 147.38
  4. Step 4: Simplify right side
    202.76x = 41,219.24
  5. Step 5: Solve for x
    x = 41,219.24/202.76
  6. Step 6: Final answer
    x = 203.29

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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.