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Finding the Fourth Proportional to 233.30, 321.84 and 154.76

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Solution

The fourth proportional to 233.30, 321.84 and 154.76 is: 213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.30 : 321.84 = 154.76 : x
  2. Step 2: Convert to fraction form
    233.30/321.84 = 154.76/x
  3. Step 3: Cross multiply
    233.30x = 321.84 × 154.76
  4. Step 4: Simplify right side
    233.30x = 49,807.96
  5. Step 5: Solve for x
    x = 49,807.96/233.30
  6. Step 6: Final answer
    x = 213.49

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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.