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Finding the Fourth Proportional to 207.16, 312.49 and 200.68

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Solution

The fourth proportional to 207.16, 312.49 and 200.68 is: 302.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.16 : 312.49 = 200.68 : x
  2. Step 2: Convert to fraction form
    207.16/312.49 = 200.68/x
  3. Step 3: Cross multiply
    207.16x = 312.49 × 200.68
  4. Step 4: Simplify right side
    207.16x = 62,710.49
  5. Step 5: Solve for x
    x = 62,710.49/207.16
  6. Step 6: Final answer
    x = 302.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.