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Finding the Fourth Proportional to 186.33, 279.49 and 56.33

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Solution

The fourth proportional to 186.33, 279.49 and 56.33 is: 84.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.33 : 279.49 = 56.33 : x
  2. Step 2: Convert to fraction form
    186.33/279.49 = 56.33/x
  3. Step 3: Cross multiply
    186.33x = 279.49 × 56.33
  4. Step 4: Simplify right side
    186.33x = 15,742.89
  5. Step 5: Solve for x
    x = 15,742.89/186.33
  6. Step 6: Final answer
    x = 84.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.