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Finding the Fourth Proportional to 97.44, 145.98 and 51.69

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Solution

The fourth proportional to 97.44, 145.98 and 51.69 is: 77.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.44 : 145.98 = 51.69 : x
  2. Step 2: Convert to fraction form
    97.44/145.98 = 51.69/x
  3. Step 3: Cross multiply
    97.44x = 145.98 × 51.69
  4. Step 4: Simplify right side
    97.44x = 7,544.98
  5. Step 5: Solve for x
    x = 7,544.98/97.44
  6. Step 6: Final answer
    x = 77.44

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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.