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Finding the Fourth Proportional to 110.08, 151.50 and 78.94

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Solution

The fourth proportional to 110.08, 151.50 and 78.94 is: 108.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.08 : 151.50 = 78.94 : x
  2. Step 2: Convert to fraction form
    110.08/151.50 = 78.94/x
  3. Step 3: Cross multiply
    110.08x = 151.50 × 78.94
  4. Step 4: Simplify right side
    110.08x = 11,959.41
  5. Step 5: Solve for x
    x = 11,959.41/110.08
  6. Step 6: Final answer
    x = 108.64

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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.