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Finding the Fourth Proportional to 186.23, 279.39 and 64.50

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Solution

The fourth proportional to 186.23, 279.39 and 64.50 is: 96.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.23 : 279.39 = 64.50 : x
  2. Step 2: Convert to fraction form
    186.23/279.39 = 64.50/x
  3. Step 3: Cross multiply
    186.23x = 279.39 × 64.50
  4. Step 4: Simplify right side
    186.23x = 18,020.66
  5. Step 5: Solve for x
    x = 18,020.66/186.23
  6. Step 6: Final answer
    x = 96.77

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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.