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Finding the Fourth Proportional to 271.18, 405.55 and 264.50

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Solution

The fourth proportional to 271.18, 405.55 and 264.50 is: 395.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.18 : 405.55 = 264.50 : x
  2. Step 2: Convert to fraction form
    271.18/405.55 = 264.50/x
  3. Step 3: Cross multiply
    271.18x = 405.55 × 264.50
  4. Step 4: Simplify right side
    271.18x = 107,264.62
  5. Step 5: Solve for x
    x = 107,264.62/271.18
  6. Step 6: Final answer
    x = 395.55

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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.