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Finding the Fourth Proportional to 169.18, 233.44 and 120.07

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Solution

The fourth proportional to 169.18, 233.44 and 120.07 is: 165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.18 : 233.44 = 120.07 : x
  2. Step 2: Convert to fraction form
    169.18/233.44 = 120.07/x
  3. Step 3: Cross multiply
    169.18x = 233.44 × 120.07
  4. Step 4: Simplify right side
    169.18x = 28,029.14
  5. Step 5: Solve for x
    x = 28,029.14/169.18
  6. Step 6: Final answer
    x = 165.68

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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.