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Finding the Fourth Proportional to 242.56, 363.20 and 201.86

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Solution

The fourth proportional to 242.56, 363.20 and 201.86 is: 302.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.56 : 363.20 = 201.86 : x
  2. Step 2: Convert to fraction form
    242.56/363.20 = 201.86/x
  3. Step 3: Cross multiply
    242.56x = 363.20 × 201.86
  4. Step 4: Simplify right side
    242.56x = 73,313.74
  5. Step 5: Solve for x
    x = 73,313.74/242.56
  6. Step 6: Final answer
    x = 302.26

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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.