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Finding the Fourth Proportional to 283.95, 391.75 and 185.76

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Solution

The fourth proportional to 283.95, 391.75 and 185.76 is: 256.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.95 : 391.75 = 185.76 : x
  2. Step 2: Convert to fraction form
    283.95/391.75 = 185.76/x
  3. Step 3: Cross multiply
    283.95x = 391.75 × 185.76
  4. Step 4: Simplify right side
    283.95x = 72,772.46
  5. Step 5: Solve for x
    x = 72,772.46/283.95
  6. Step 6: Final answer
    x = 256.29

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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.