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Finding the Fourth Proportional to 268.75, 400.97 and 239.51

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Solution

The fourth proportional to 268.75, 400.97 and 239.51 is: 357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.75 : 400.97 = 239.51 : x
  2. Step 2: Convert to fraction form
    268.75/400.97 = 239.51/x
  3. Step 3: Cross multiply
    268.75x = 400.97 × 239.51
  4. Step 4: Simplify right side
    268.75x = 96,036.13
  5. Step 5: Solve for x
    x = 96,036.13/268.75
  6. Step 6: Final answer
    x = 357.35

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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.