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Finding the Fourth Proportional to 178.99, 246.45 and 171.60

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Solution

The fourth proportional to 178.99, 246.45 and 171.60 is: 236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.99 : 246.45 = 171.60 : x
  2. Step 2: Convert to fraction form
    178.99/246.45 = 171.60/x
  3. Step 3: Cross multiply
    178.99x = 246.45 × 171.60
  4. Step 4: Simplify right side
    178.99x = 42,291.11
  5. Step 5: Solve for x
    x = 42,291.11/178.99
  6. Step 6: Final answer
    x = 236.28

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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.