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Finding the Fourth Proportional to 65.95, 98.91 and 25.35

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Solution

The fourth proportional to 65.95, 98.91 and 25.35 is: 38.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.95 : 98.91 = 25.35 : x
  2. Step 2: Convert to fraction form
    65.95/98.91 = 25.35/x
  3. Step 3: Cross multiply
    65.95x = 98.91 × 25.35
  4. Step 4: Simplify right side
    65.95x = 2,507.37
  5. Step 5: Solve for x
    x = 2,507.37/65.95
  6. Step 6: Final answer
    x = 38.02

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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.