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Finding the Fourth Proportional to 233.84, 321.85 and 187.07

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Solution

The fourth proportional to 233.84, 321.85 and 187.07 is: 257.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.84 : 321.85 = 187.07 : x
  2. Step 2: Convert to fraction form
    233.84/321.85 = 187.07/x
  3. Step 3: Cross multiply
    233.84x = 321.85 × 187.07
  4. Step 4: Simplify right side
    233.84x = 60,205.93
  5. Step 5: Solve for x
    x = 60,205.93/233.84
  6. Step 6: Final answer
    x = 257.47

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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.