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Finding the Fourth Proportional to 152.15, 227.91 and 71.06

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Solution

The fourth proportional to 152.15, 227.91 and 71.06 is: 106.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.15 : 227.91 = 71.06 : x
  2. Step 2: Convert to fraction form
    152.15/227.91 = 71.06/x
  3. Step 3: Cross multiply
    152.15x = 227.91 × 71.06
  4. Step 4: Simplify right side
    152.15x = 16,195.28
  5. Step 5: Solve for x
    x = 16,195.28/152.15
  6. Step 6: Final answer
    x = 106.44

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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.