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Finding the Fourth Proportional to 207.36, 309 and 200.16

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Solution

The fourth proportional to 207.36, 309 and 200.16 is: 298.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.36 : 309 = 200.16 : x
  2. Step 2: Convert to fraction form
    207.36/309 = 200.16/x
  3. Step 3: Cross multiply
    207.36x = 309 × 200.16
  4. Step 4: Simplify right side
    207.36x = 61,849.44
  5. Step 5: Solve for x
    x = 61,849.44/207.36
  6. Step 6: Final answer
    x = 298.27

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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.