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Finding the Fourth Proportional to 154.10, 229.30 and 151.40

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Solution

The fourth proportional to 154.10, 229.30 and 151.40 is: 225.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.10 : 229.30 = 151.40 : x
  2. Step 2: Convert to fraction form
    154.10/229.30 = 151.40/x
  3. Step 3: Cross multiply
    154.10x = 229.30 × 151.40
  4. Step 4: Simplify right side
    154.10x = 34,716.21
  5. Step 5: Solve for x
    x = 34,716.21/154.10
  6. Step 6: Final answer
    x = 225.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.