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Finding the Fourth Proportional to 65.19, 97.74 and 34.75

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Solution

The fourth proportional to 65.19, 97.74 and 34.75 is: 52.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.19 : 97.74 = 34.75 : x
  2. Step 2: Convert to fraction form
    65.19/97.74 = 34.75/x
  3. Step 3: Cross multiply
    65.19x = 97.74 × 34.75
  4. Step 4: Simplify right side
    65.19x = 3,396.47
  5. Step 5: Solve for x
    x = 3,396.47/65.19
  6. Step 6: Final answer
    x = 52.10

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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.