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Finding the Fourth Proportional to 154.53, 233.45 and 153.18

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Solution

The fourth proportional to 154.53, 233.45 and 153.18 is: 231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.53 : 233.45 = 153.18 : x
  2. Step 2: Convert to fraction form
    154.53/233.45 = 153.18/x
  3. Step 3: Cross multiply
    154.53x = 233.45 × 153.18
  4. Step 4: Simplify right side
    154.53x = 35,759.11
  5. Step 5: Solve for x
    x = 35,759.11/154.53
  6. Step 6: Final answer
    x = 231.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.