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Finding the Fourth Proportional to 242.84, 363.93 and 103.85

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Solution

The fourth proportional to 242.84, 363.93 and 103.85 is: 155.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.84 : 363.93 = 103.85 : x
  2. Step 2: Convert to fraction form
    242.84/363.93 = 103.85/x
  3. Step 3: Cross multiply
    242.84x = 363.93 × 103.85
  4. Step 4: Simplify right side
    242.84x = 37,792.31
  5. Step 5: Solve for x
    x = 37,792.31/242.84
  6. Step 6: Final answer
    x = 155.63

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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.