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Finding the Fourth Proportional to 173.61, 260.01 and 138.92

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Solution

The fourth proportional to 173.61, 260.01 and 138.92 is: 208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.61 : 260.01 = 138.92 : x
  2. Step 2: Convert to fraction form
    173.61/260.01 = 138.92/x
  3. Step 3: Cross multiply
    173.61x = 260.01 × 138.92
  4. Step 4: Simplify right side
    173.61x = 36,119.29
  5. Step 5: Solve for x
    x = 36,119.29/173.61
  6. Step 6: Final answer
    x = 208.05

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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.