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Finding the Fourth Proportional to 178.84, 266.72 and 154.63

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Solution

The fourth proportional to 178.84, 266.72 and 154.63 is: 230.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.84 : 266.72 = 154.63 : x
  2. Step 2: Convert to fraction form
    178.84/266.72 = 154.63/x
  3. Step 3: Cross multiply
    178.84x = 266.72 × 154.63
  4. Step 4: Simplify right side
    178.84x = 41,242.91
  5. Step 5: Solve for x
    x = 41,242.91/178.84
  6. Step 6: Final answer
    x = 230.61

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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.