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Finding the Fourth Proportional to 301.95, 416.25 and 239.58

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Solution

The fourth proportional to 301.95, 416.25 and 239.58 is: 330.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.95 : 416.25 = 239.58 : x
  2. Step 2: Convert to fraction form
    301.95/416.25 = 239.58/x
  3. Step 3: Cross multiply
    301.95x = 416.25 × 239.58
  4. Step 4: Simplify right side
    301.95x = 99,725.18
  5. Step 5: Solve for x
    x = 99,725.18/301.95
  6. Step 6: Final answer
    x = 330.27

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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.