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Finding the Fourth Proportional to 154.86, 232.06 and 122.43

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Solution

The fourth proportional to 154.86, 232.06 and 122.43 is: 183.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.86 : 232.06 = 122.43 : x
  2. Step 2: Convert to fraction form
    154.86/232.06 = 122.43/x
  3. Step 3: Cross multiply
    154.86x = 232.06 × 122.43
  4. Step 4: Simplify right side
    154.86x = 28,411.11
  5. Step 5: Solve for x
    x = 28,411.11/154.86
  6. Step 6: Final answer
    x = 183.46

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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.