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Finding the Fourth Proportional to 173.42, 260.12 and 51.66

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Solution

The fourth proportional to 173.42, 260.12 and 51.66 is: 77.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.42 : 260.12 = 51.66 : x
  2. Step 2: Convert to fraction form
    173.42/260.12 = 51.66/x
  3. Step 3: Cross multiply
    173.42x = 260.12 × 51.66
  4. Step 4: Simplify right side
    173.42x = 13,437.80
  5. Step 5: Solve for x
    x = 13,437.80/173.42
  6. Step 6: Final answer
    x = 77.49

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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.