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Finding the Fourth Proportional to 454.34, 680.29 and 271.28

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Solution

The fourth proportional to 454.34, 680.29 and 271.28 is: 406.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.34 : 680.29 = 271.28 : x
  2. Step 2: Convert to fraction form
    454.34/680.29 = 271.28/x
  3. Step 3: Cross multiply
    454.34x = 680.29 × 271.28
  4. Step 4: Simplify right side
    454.34x = 184,549.07
  5. Step 5: Solve for x
    x = 184,549.07/454.34
  6. Step 6: Final answer
    x = 406.19

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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.