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Finding the Fourth Proportional to 110.77, 152.75 and 75.80

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Solution

The fourth proportional to 110.77, 152.75 and 75.80 is: 104.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.77 : 152.75 = 75.80 : x
  2. Step 2: Convert to fraction form
    110.77/152.75 = 75.80/x
  3. Step 3: Cross multiply
    110.77x = 152.75 × 75.80
  4. Step 4: Simplify right side
    110.77x = 11,579.02
  5. Step 5: Solve for x
    x = 11,579.02/110.77
  6. Step 6: Final answer
    x = 104.53

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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.