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Finding the Fourth Proportional to 189.66, 286.07 and 183.18

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Solution

The fourth proportional to 189.66, 286.07 and 183.18 is: 276.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.66 : 286.07 = 183.18 : x
  2. Step 2: Convert to fraction form
    189.66/286.07 = 183.18/x
  3. Step 3: Cross multiply
    189.66x = 286.07 × 183.18
  4. Step 4: Simplify right side
    189.66x = 52,401.39
  5. Step 5: Solve for x
    x = 52,401.39/189.66
  6. Step 6: Final answer
    x = 276.29

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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.