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Finding the Fourth Proportional to 435.75, 601.39 and 288.69

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Solution

The fourth proportional to 435.75, 601.39 and 288.69 is: 398.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.75 : 601.39 = 288.69 : x
  2. Step 2: Convert to fraction form
    435.75/601.39 = 288.69/x
  3. Step 3: Cross multiply
    435.75x = 601.39 × 288.69
  4. Step 4: Simplify right side
    435.75x = 173,615.28
  5. Step 5: Solve for x
    x = 173,615.28/435.75
  6. Step 6: Final answer
    x = 398.43

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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.