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Finding the Fourth Proportional to 270.39, 406.40 and 237.99

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Solution

The fourth proportional to 270.39, 406.40 and 237.99 is: 357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.39 : 406.40 = 237.99 : x
  2. Step 2: Convert to fraction form
    270.39/406.40 = 237.99/x
  3. Step 3: Cross multiply
    270.39x = 406.40 × 237.99
  4. Step 4: Simplify right side
    270.39x = 96,717.95
  5. Step 5: Solve for x
    x = 96,717.95/270.39
  6. Step 6: Final answer
    x = 357.70

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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.