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Finding the Fourth Proportional to 186.13, 280.64 and 171.01

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Solution

The fourth proportional to 186.13, 280.64 and 171.01 is: 257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.13 : 280.64 = 171.01 : x
  2. Step 2: Convert to fraction form
    186.13/280.64 = 171.01/x
  3. Step 3: Cross multiply
    186.13x = 280.64 × 171.01
  4. Step 4: Simplify right side
    186.13x = 47,992.25
  5. Step 5: Solve for x
    x = 47,992.25/186.13
  6. Step 6: Final answer
    x = 257.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.