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Finding the Fourth Proportional to 243.84, 365.28 and 242.88

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Solution

The fourth proportional to 243.84, 365.28 and 242.88 is: 363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.84 : 365.28 = 242.88 : x
  2. Step 2: Convert to fraction form
    243.84/365.28 = 242.88/x
  3. Step 3: Cross multiply
    243.84x = 365.28 × 242.88
  4. Step 4: Simplify right side
    243.84x = 88,719.21
  5. Step 5: Solve for x
    x = 88,719.21/243.84
  6. Step 6: Final answer
    x = 363.84

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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.