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Finding the Fourth Proportional to 152.24, 210.05 and 122.73

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Solution

The fourth proportional to 152.24, 210.05 and 122.73 is: 169.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.24 : 210.05 = 122.73 : x
  2. Step 2: Convert to fraction form
    152.24/210.05 = 122.73/x
  3. Step 3: Cross multiply
    152.24x = 210.05 × 122.73
  4. Step 4: Simplify right side
    152.24x = 25,778.82
  5. Step 5: Solve for x
    x = 25,778.82/152.24
  6. Step 6: Final answer
    x = 169.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.