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Finding the Fourth Proportional to 233.00, 321.58 and 154.31

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Solution

The fourth proportional to 233.00, 321.58 and 154.31 is: 212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.00 : 321.58 = 154.31 : x
  2. Step 2: Convert to fraction form
    233.00/321.58 = 154.31/x
  3. Step 3: Cross multiply
    233.00x = 321.58 × 154.31
  4. Step 4: Simplify right side
    233.00x = 49,622.24
  5. Step 5: Solve for x
    x = 49,622.24/233.00
  6. Step 6: Final answer
    x = 212.98

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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.