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Finding the Fourth Proportional to 233.10, 349.62 and 111.45

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Solution

The fourth proportional to 233.10, 349.62 and 111.45 is: 167.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.10 : 349.62 = 111.45 : x
  2. Step 2: Convert to fraction form
    233.10/349.62 = 111.45/x
  3. Step 3: Cross multiply
    233.10x = 349.62 × 111.45
  4. Step 4: Simplify right side
    233.10x = 38,965.15
  5. Step 5: Solve for x
    x = 38,965.15/233.10
  6. Step 6: Final answer
    x = 167.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.