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Finding the Fourth Proportional to 270.35, 372.99 and 159.80

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Solution

The fourth proportional to 270.35, 372.99 and 159.80 is: 220.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.35 : 372.99 = 159.80 : x
  2. Step 2: Convert to fraction form
    270.35/372.99 = 159.80/x
  3. Step 3: Cross multiply
    270.35x = 372.99 × 159.80
  4. Step 4: Simplify right side
    270.35x = 59,603.80
  5. Step 5: Solve for x
    x = 59,603.80/270.35
  6. Step 6: Final answer
    x = 220.47

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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.