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Finding the Fourth Proportional to 164.71, 247.01 and 67.26

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Solution

The fourth proportional to 164.71, 247.01 and 67.26 is: 100.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.71 : 247.01 = 67.26 : x
  2. Step 2: Convert to fraction form
    164.71/247.01 = 67.26/x
  3. Step 3: Cross multiply
    164.71x = 247.01 × 67.26
  4. Step 4: Simplify right side
    164.71x = 16,614.79
  5. Step 5: Solve for x
    x = 16,614.79/164.71
  6. Step 6: Final answer
    x = 100.87

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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.