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Finding the Fourth Proportional to 233.28, 348.97 and 212.85

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Solution

The fourth proportional to 233.28, 348.97 and 212.85 is: 318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.28 : 348.97 = 212.85 : x
  2. Step 2: Convert to fraction form
    233.28/348.97 = 212.85/x
  3. Step 3: Cross multiply
    233.28x = 348.97 × 212.85
  4. Step 4: Simplify right side
    233.28x = 74,275.46
  5. Step 5: Solve for x
    x = 74,275.46/233.28
  6. Step 6: Final answer
    x = 318.40

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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.