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Finding the Fourth Proportional to 268.18, 370.07 and 255.22

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Solution

The fourth proportional to 268.18, 370.07 and 255.22 is: 352.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.18 : 370.07 = 255.22 : x
  2. Step 2: Convert to fraction form
    268.18/370.07 = 255.22/x
  3. Step 3: Cross multiply
    268.18x = 370.07 × 255.22
  4. Step 4: Simplify right side
    268.18x = 94,449.27
  5. Step 5: Solve for x
    x = 94,449.27/268.18
  6. Step 6: Final answer
    x = 352.19

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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.