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Finding the Fourth Proportional to 287.36, 395.84 and 235.52

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Solution

The fourth proportional to 287.36, 395.84 and 235.52 is: 324.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.36 : 395.84 = 235.52 : x
  2. Step 2: Convert to fraction form
    287.36/395.84 = 235.52/x
  3. Step 3: Cross multiply
    287.36x = 395.84 × 235.52
  4. Step 4: Simplify right side
    287.36x = 93,228.24
  5. Step 5: Solve for x
    x = 93,228.24/287.36
  6. Step 6: Final answer
    x = 324.43

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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.