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Finding the Fourth Proportional to 263.55, 363.72 and 147.12

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Solution

The fourth proportional to 263.55, 363.72 and 147.12 is: 203.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.55 : 363.72 = 147.12 : x
  2. Step 2: Convert to fraction form
    263.55/363.72 = 147.12/x
  3. Step 3: Cross multiply
    263.55x = 363.72 × 147.12
  4. Step 4: Simplify right side
    263.55x = 53,510.49
  5. Step 5: Solve for x
    x = 53,510.49/263.55
  6. Step 6: Final answer
    x = 203.04

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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.