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Finding the Fourth Proportional to 178.01, 245.78 and 133.67

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Solution

The fourth proportional to 178.01, 245.78 and 133.67 is: 184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.01 : 245.78 = 133.67 : x
  2. Step 2: Convert to fraction form
    178.01/245.78 = 133.67/x
  3. Step 3: Cross multiply
    178.01x = 245.78 × 133.67
  4. Step 4: Simplify right side
    178.01x = 32,853.23
  5. Step 5: Solve for x
    x = 32,853.23/178.01
  6. Step 6: Final answer
    x = 184.55

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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.