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Finding the Fourth Proportional to 284.22, 392.31 and 271.26

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Solution

The fourth proportional to 284.22, 392.31 and 271.26 is: 374.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.22 : 392.31 = 271.26 : x
  2. Step 2: Convert to fraction form
    284.22/392.31 = 271.26/x
  3. Step 3: Cross multiply
    284.22x = 392.31 × 271.26
  4. Step 4: Simplify right side
    284.22x = 106,418.01
  5. Step 5: Solve for x
    x = 106,418.01/284.22
  6. Step 6: Final answer
    x = 374.42

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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.