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Finding the Fourth Proportional to 97.35, 146.07 and 51.72

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Solution

The fourth proportional to 97.35, 146.07 and 51.72 is: 77.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.35 : 146.07 = 51.72 : x
  2. Step 2: Convert to fraction form
    97.35/146.07 = 51.72/x
  3. Step 3: Cross multiply
    97.35x = 146.07 × 51.72
  4. Step 4: Simplify right side
    97.35x = 7,554.74
  5. Step 5: Solve for x
    x = 7,554.74/97.35
  6. Step 6: Final answer
    x = 77.60

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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.