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Finding the Fourth Proportional to 74.24, 110.68 and 73.07

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Solution

The fourth proportional to 74.24, 110.68 and 73.07 is: 108.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.24 : 110.68 = 73.07 : x
  2. Step 2: Convert to fraction form
    74.24/110.68 = 73.07/x
  3. Step 3: Cross multiply
    74.24x = 110.68 × 73.07
  4. Step 4: Simplify right side
    74.24x = 8,087.02
  5. Step 5: Solve for x
    x = 8,087.02/74.24
  6. Step 6: Final answer
    x = 108.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.