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Finding the Fourth Proportional to 296.14, 407.67 and 255.25

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Solution

The fourth proportional to 296.14, 407.67 and 255.25 is: 351.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.14 : 407.67 = 255.25 : x
  2. Step 2: Convert to fraction form
    296.14/407.67 = 255.25/x
  3. Step 3: Cross multiply
    296.14x = 407.67 × 255.25
  4. Step 4: Simplify right side
    296.14x = 104,057.77
  5. Step 5: Solve for x
    x = 104,057.77/296.14
  6. Step 6: Final answer
    x = 351.38

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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.