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Finding the Fourth Proportional to 65.34, 97.35 and 61.26

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Solution

The fourth proportional to 65.34, 97.35 and 61.26 is: 91.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.34 : 97.35 = 61.26 : x
  2. Step 2: Convert to fraction form
    65.34/97.35 = 61.26/x
  3. Step 3: Cross multiply
    65.34x = 97.35 × 61.26
  4. Step 4: Simplify right side
    65.34x = 5,963.66
  5. Step 5: Solve for x
    x = 5,963.66/65.34
  6. Step 6: Final answer
    x = 91.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.