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Finding the Fourth Proportional to 238.65, 356.03 and 235.58

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Solution

The fourth proportional to 238.65, 356.03 and 235.58 is: 351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.65 : 356.03 = 235.58 : x
  2. Step 2: Convert to fraction form
    238.65/356.03 = 235.58/x
  3. Step 3: Cross multiply
    238.65x = 356.03 × 235.58
  4. Step 4: Simplify right side
    238.65x = 83,871.47
  5. Step 5: Solve for x
    x = 83,871.47/238.65
  6. Step 6: Final answer
    x = 351.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.