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Finding the Fourth Proportional to 176.78, 263.82 and 154.72

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Solution

The fourth proportional to 176.78, 263.82 and 154.72 is: 230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.78 : 263.82 = 154.72 : x
  2. Step 2: Convert to fraction form
    176.78/263.82 = 154.72/x
  3. Step 3: Cross multiply
    176.78x = 263.82 × 154.72
  4. Step 4: Simplify right side
    176.78x = 40,818.23
  5. Step 5: Solve for x
    x = 40,818.23/176.78
  6. Step 6: Final answer
    x = 230.90

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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.