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Finding the Fourth Proportional to 73.09, 110.15 and 68.53

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Solution

The fourth proportional to 73.09, 110.15 and 68.53 is: 103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.09 : 110.15 = 68.53 : x
  2. Step 2: Convert to fraction form
    73.09/110.15 = 68.53/x
  3. Step 3: Cross multiply
    73.09x = 110.15 × 68.53
  4. Step 4: Simplify right side
    73.09x = 7,548.58
  5. Step 5: Solve for x
    x = 7,548.58/73.09
  6. Step 6: Final answer
    x = 103.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.