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Finding the Fourth Proportional to 169.51, 233.80 and 104.05

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Solution

The fourth proportional to 169.51, 233.80 and 104.05 is: 143.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.51 : 233.80 = 104.05 : x
  2. Step 2: Convert to fraction form
    169.51/233.80 = 104.05/x
  3. Step 3: Cross multiply
    169.51x = 233.80 × 104.05
  4. Step 4: Simplify right side
    169.51x = 24,325.20
  5. Step 5: Solve for x
    x = 24,325.20/169.51
  6. Step 6: Final answer
    x = 143.51

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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.