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Finding the Fourth Proportional to 395.14, 591.51 and 272.02

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Solution

The fourth proportional to 395.14, 591.51 and 272.02 is: 407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.14 : 591.51 = 272.02 : x
  2. Step 2: Convert to fraction form
    395.14/591.51 = 272.02/x
  3. Step 3: Cross multiply
    395.14x = 591.51 × 272.02
  4. Step 4: Simplify right side
    395.14x = 160,902.55
  5. Step 5: Solve for x
    x = 160,902.55/395.14
  6. Step 6: Final answer
    x = 407.20

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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.