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Finding the Fourth Proportional to 418.41, 577.58 and 271.28

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Solution

The fourth proportional to 418.41, 577.58 and 271.28 is: 374.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.41 : 577.58 = 271.28 : x
  2. Step 2: Convert to fraction form
    418.41/577.58 = 271.28/x
  3. Step 3: Cross multiply
    418.41x = 577.58 × 271.28
  4. Step 4: Simplify right side
    418.41x = 156,681.66
  5. Step 5: Solve for x
    x = 156,681.66/418.41
  6. Step 6: Final answer
    x = 374.47

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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.