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Finding the Fourth Proportional to 154.24, 211.52 and 152.44

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Solution

The fourth proportional to 154.24, 211.52 and 152.44 is: 209.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.24 : 211.52 = 152.44 : x
  2. Step 2: Convert to fraction form
    154.24/211.52 = 152.44/x
  3. Step 3: Cross multiply
    154.24x = 211.52 × 152.44
  4. Step 4: Simplify right side
    154.24x = 32,243.96
  5. Step 5: Solve for x
    x = 32,243.96/154.24
  6. Step 6: Final answer
    x = 209.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.