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Finding the Fourth Proportional to 178.01, 245.43 and 136.50

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Solution

The fourth proportional to 178.01, 245.43 and 136.50 is: 188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.01 : 245.43 = 136.50 : x
  2. Step 2: Convert to fraction form
    178.01/245.43 = 136.50/x
  3. Step 3: Cross multiply
    178.01x = 245.43 × 136.50
  4. Step 4: Simplify right side
    178.01x = 33,501.66
  5. Step 5: Solve for x
    x = 33,501.66/178.01
  6. Step 6: Final answer
    x = 188.20

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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.