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Finding the Fourth Proportional to 242.20, 333.30 and 214.12

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Solution

The fourth proportional to 242.20, 333.30 and 214.12 is: 294.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.20 : 333.30 = 214.12 : x
  2. Step 2: Convert to fraction form
    242.20/333.30 = 214.12/x
  3. Step 3: Cross multiply
    242.20x = 333.30 × 214.12
  4. Step 4: Simplify right side
    242.20x = 71,366.20
  5. Step 5: Solve for x
    x = 71,366.20/242.20
  6. Step 6: Final answer
    x = 294.66

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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.