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Finding the Fourth Proportional to 178.68, 266.54 and 154.53

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Solution

The fourth proportional to 178.68, 266.54 and 154.53 is: 230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.68 : 266.54 = 154.53 : x
  2. Step 2: Convert to fraction form
    178.68/266.54 = 154.53/x
  3. Step 3: Cross multiply
    178.68x = 266.54 × 154.53
  4. Step 4: Simplify right side
    178.68x = 41,189.27
  5. Step 5: Solve for x
    x = 41,189.27/178.68
  6. Step 6: Final answer
    x = 230.52

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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.