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Finding the Fourth Proportional to 207.83, 309.28 and 200.91

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Solution

The fourth proportional to 207.83, 309.28 and 200.91 is: 298.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.83 : 309.28 = 200.91 : x
  2. Step 2: Convert to fraction form
    207.83/309.28 = 200.91/x
  3. Step 3: Cross multiply
    207.83x = 309.28 × 200.91
  4. Step 4: Simplify right side
    207.83x = 62,136.40
  5. Step 5: Solve for x
    x = 62,136.40/207.83
  6. Step 6: Final answer
    x = 298.98

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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.