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Finding the Fourth Proportional to 617.84, 926.80 and 271.18

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Solution

The fourth proportional to 617.84, 926.80 and 271.18 is: 406.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.84 : 926.80 = 271.18 : x
  2. Step 2: Convert to fraction form
    617.84/926.80 = 271.18/x
  3. Step 3: Cross multiply
    617.84x = 926.80 × 271.18
  4. Step 4: Simplify right side
    617.84x = 251,330.10
  5. Step 5: Solve for x
    x = 251,330.10/617.84
  6. Step 6: Final answer
    x = 406.79

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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.