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Finding the Fourth Proportional to 189.15, 282.06 and 174.19

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Solution

The fourth proportional to 189.15, 282.06 and 174.19 is: 259.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.15 : 282.06 = 174.19 : x
  2. Step 2: Convert to fraction form
    189.15/282.06 = 174.19/x
  3. Step 3: Cross multiply
    189.15x = 282.06 × 174.19
  4. Step 4: Simplify right side
    189.15x = 49,129.75
  5. Step 5: Solve for x
    x = 49,129.75/189.15
  6. Step 6: Final answer
    x = 259.75

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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.