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Finding the Fourth Proportional to 153.20, 229.51 and 122.41

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Solution

The fourth proportional to 153.20, 229.51 and 122.41 is: 183.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.20 : 229.51 = 122.41 : x
  2. Step 2: Convert to fraction form
    153.20/229.51 = 122.41/x
  3. Step 3: Cross multiply
    153.20x = 229.51 × 122.41
  4. Step 4: Simplify right side
    153.20x = 28,095.40
  5. Step 5: Solve for x
    x = 28,095.40/153.20
  6. Step 6: Final answer
    x = 183.39

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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.