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Finding the Fourth Proportional to 207.61, 309.98 and 202.14

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Solution

The fourth proportional to 207.61, 309.98 and 202.14 is: 301.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.61 : 309.98 = 202.14 : x
  2. Step 2: Convert to fraction form
    207.61/309.98 = 202.14/x
  3. Step 3: Cross multiply
    207.61x = 309.98 × 202.14
  4. Step 4: Simplify right side
    207.61x = 62,659.36
  5. Step 5: Solve for x
    x = 62,659.36/207.61
  6. Step 6: Final answer
    x = 301.82

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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.