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Finding the Fourth Proportional to 154.68, 213.21 and 110.94

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Solution

The fourth proportional to 154.68, 213.21 and 110.94 is: 152.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.68 : 213.21 = 110.94 : x
  2. Step 2: Convert to fraction form
    154.68/213.21 = 110.94/x
  3. Step 3: Cross multiply
    154.68x = 213.21 × 110.94
  4. Step 4: Simplify right side
    154.68x = 23,653.52
  5. Step 5: Solve for x
    x = 23,653.52/154.68
  6. Step 6: Final answer
    x = 152.92

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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.