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Finding the Fourth Proportional to 242.03, 333.97 and 138.53

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Solution

The fourth proportional to 242.03, 333.97 and 138.53 is: 191.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.03 : 333.97 = 138.53 : x
  2. Step 2: Convert to fraction form
    242.03/333.97 = 138.53/x
  3. Step 3: Cross multiply
    242.03x = 333.97 × 138.53
  4. Step 4: Simplify right side
    242.03x = 46,264.86
  5. Step 5: Solve for x
    x = 46,264.86/242.03
  6. Step 6: Final answer
    x = 191.15

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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.