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Finding the Fourth Proportional to 233.76, 322.08 and 168.15

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Solution

The fourth proportional to 233.76, 322.08 and 168.15 is: 231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.76 : 322.08 = 168.15 : x
  2. Step 2: Convert to fraction form
    233.76/322.08 = 168.15/x
  3. Step 3: Cross multiply
    233.76x = 322.08 × 168.15
  4. Step 4: Simplify right side
    233.76x = 54,157.75
  5. Step 5: Solve for x
    x = 54,157.75/233.76
  6. Step 6: Final answer
    x = 231.68

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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.