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Finding the Fourth Proportional to 173.63, 260.22 and 99.57

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Solution

The fourth proportional to 173.63, 260.22 and 99.57 is: 149.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.63 : 260.22 = 99.57 : x
  2. Step 2: Convert to fraction form
    173.63/260.22 = 99.57/x
  3. Step 3: Cross multiply
    173.63x = 260.22 × 99.57
  4. Step 4: Simplify right side
    173.63x = 25,910.11
  5. Step 5: Solve for x
    x = 25,910.11/173.63
  6. Step 6: Final answer
    x = 149.23

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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.