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Finding the Fourth Proportional to 101.06, 151.58 and 74.06

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Solution

The fourth proportional to 101.06, 151.58 and 74.06 is: 111.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.06 : 151.58 = 74.06 : x
  2. Step 2: Convert to fraction form
    101.06/151.58 = 74.06/x
  3. Step 3: Cross multiply
    101.06x = 151.58 × 74.06
  4. Step 4: Simplify right side
    101.06x = 11,226.01
  5. Step 5: Solve for x
    x = 11,226.01/101.06
  6. Step 6: Final answer
    x = 111.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.