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Finding the Fourth Proportional to 283.29, 388.23 and 279.66

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Solution

The fourth proportional to 283.29, 388.23 and 279.66 is: 383.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.29 : 388.23 = 279.66 : x
  2. Step 2: Convert to fraction form
    283.29/388.23 = 279.66/x
  3. Step 3: Cross multiply
    283.29x = 388.23 × 279.66
  4. Step 4: Simplify right side
    283.29x = 108,572.40
  5. Step 5: Solve for x
    x = 108,572.40/283.29
  6. Step 6: Final answer
    x = 383.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.