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Finding the Fourth Proportional to 239.36, 356.60 and 229.64

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Solution

The fourth proportional to 239.36, 356.60 and 229.64 is: 342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.36 : 356.60 = 229.64 : x
  2. Step 2: Convert to fraction form
    239.36/356.60 = 229.64/x
  3. Step 3: Cross multiply
    239.36x = 356.60 × 229.64
  4. Step 4: Simplify right side
    239.36x = 81,888.42
  5. Step 5: Solve for x
    x = 81,888.42/239.36
  6. Step 6: Final answer
    x = 342.12

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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.