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Finding the Fourth Proportional to 101.87, 152.81 and 40.99

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Solution

The fourth proportional to 101.87, 152.81 and 40.99 is: 61.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.87 : 152.81 = 40.99 : x
  2. Step 2: Convert to fraction form
    101.87/152.81 = 40.99/x
  3. Step 3: Cross multiply
    101.87x = 152.81 × 40.99
  4. Step 4: Simplify right side
    101.87x = 6,263.09
  5. Step 5: Solve for x
    x = 6,263.09/101.87
  6. Step 6: Final answer
    x = 61.48

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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.