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Finding the Fourth Proportional to 283.27, 390.99 and 185.17

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Solution

The fourth proportional to 283.27, 390.99 and 185.17 is: 255.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.27 : 390.99 = 185.17 : x
  2. Step 2: Convert to fraction form
    283.27/390.99 = 185.17/x
  3. Step 3: Cross multiply
    283.27x = 390.99 × 185.17
  4. Step 4: Simplify right side
    283.27x = 72,399.62
  5. Step 5: Solve for x
    x = 72,399.62/283.27
  6. Step 6: Final answer
    x = 255.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.