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Finding the Fourth Proportional to 270.15, 403.14 and 239.37

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Solution

The fourth proportional to 270.15, 403.14 and 239.37 is: 357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.15 : 403.14 = 239.37 : x
  2. Step 2: Convert to fraction form
    270.15/403.14 = 239.37/x
  3. Step 3: Cross multiply
    270.15x = 403.14 × 239.37
  4. Step 4: Simplify right side
    270.15x = 96,499.62
  5. Step 5: Solve for x
    x = 96,499.62/270.15
  6. Step 6: Final answer
    x = 357.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.