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Finding the Fourth Proportional to 474.40, 711.44 and 181.99

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Solution

The fourth proportional to 474.40, 711.44 and 181.99 is: 272.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.40 : 711.44 = 181.99 : x
  2. Step 2: Convert to fraction form
    474.40/711.44 = 181.99/x
  3. Step 3: Cross multiply
    474.40x = 711.44 × 181.99
  4. Step 4: Simplify right side
    474.40x = 129,474.97
  5. Step 5: Solve for x
    x = 129,474.97/474.40
  6. Step 6: Final answer
    x = 272.92

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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.