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Finding the Fourth Proportional to 270.28, 373 and 159.74

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Solution

The fourth proportional to 270.28, 373 and 159.74 is: 220.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.28 : 373 = 159.74 : x
  2. Step 2: Convert to fraction form
    270.28/373 = 159.74/x
  3. Step 3: Cross multiply
    270.28x = 373 × 159.74
  4. Step 4: Simplify right side
    270.28x = 59,583.02
  5. Step 5: Solve for x
    x = 59,583.02/270.28
  6. Step 6: Final answer
    x = 220.45

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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.