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Finding the Fourth Proportional to 110.00, 151.72 and 65.75

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Solution

The fourth proportional to 110.00, 151.72 and 65.75 is: 90.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.00 : 151.72 = 65.75 : x
  2. Step 2: Convert to fraction form
    110.00/151.72 = 65.75/x
  3. Step 3: Cross multiply
    110.00x = 151.72 × 65.75
  4. Step 4: Simplify right side
    110.00x = 9,976.16
  5. Step 5: Solve for x
    x = 9,976.16/110.00
  6. Step 6: Final answer
    x = 90.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.