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Finding the Fourth Proportional to 186.31, 279.47 and 58.06

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Solution

The fourth proportional to 186.31, 279.47 and 58.06 is: 87.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.31 : 279.47 = 58.06 : x
  2. Step 2: Convert to fraction form
    186.31/279.47 = 58.06/x
  3. Step 3: Cross multiply
    186.31x = 279.47 × 58.06
  4. Step 4: Simplify right side
    186.31x = 16,226.03
  5. Step 5: Solve for x
    x = 16,226.03/186.31
  6. Step 6: Final answer
    x = 87.09

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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.