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Finding the Fourth Proportional to 74.06, 101.59 and 72.26

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Solution

The fourth proportional to 74.06, 101.59 and 72.26 is: 99.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.06 : 101.59 = 72.26 : x
  2. Step 2: Convert to fraction form
    74.06/101.59 = 72.26/x
  3. Step 3: Cross multiply
    74.06x = 101.59 × 72.26
  4. Step 4: Simplify right side
    74.06x = 7,340.89
  5. Step 5: Solve for x
    x = 7,340.89/74.06
  6. Step 6: Final answer
    x = 99.12

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.