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Finding the Fourth Proportional to 242.62, 333.97 and 230.31

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Solution

The fourth proportional to 242.62, 333.97 and 230.31 is: 317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.62 : 333.97 = 230.31 : x
  2. Step 2: Convert to fraction form
    242.62/333.97 = 230.31/x
  3. Step 3: Cross multiply
    242.62x = 333.97 × 230.31
  4. Step 4: Simplify right side
    242.62x = 76,916.05
  5. Step 5: Solve for x
    x = 76,916.05/242.62
  6. Step 6: Final answer
    x = 317.03

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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.