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Finding the Fourth Proportional to 233.10, 321.68 and 134.87

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Solution

The fourth proportional to 233.10, 321.68 and 134.87 is: 186.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.10 : 321.68 = 134.87 : x
  2. Step 2: Convert to fraction form
    233.10/321.68 = 134.87/x
  3. Step 3: Cross multiply
    233.10x = 321.68 × 134.87
  4. Step 4: Simplify right side
    233.10x = 43,384.98
  5. Step 5: Solve for x
    x = 43,384.98/233.10
  6. Step 6: Final answer
    x = 186.12

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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.