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Finding the Fourth Proportional to 474.54, 711.96 and 186

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Solution

The fourth proportional to 474.54, 711.96 and 186 is: 279.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.54 : 711.96 = 186 : x
  2. Step 2: Convert to fraction form
    474.54/711.96 = 186/x
  3. Step 3: Cross multiply
    474.54x = 711.96 × 186
  4. Step 4: Simplify right side
    474.54x = 132,424.56
  5. Step 5: Solve for x
    x = 132,424.56/474.54
  6. Step 6: Final answer
    x = 279.06

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