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Finding the Fourth Proportional to 207.05, 310.86 and 185.18

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Solution

The fourth proportional to 207.05, 310.86 and 185.18 is: 278.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.05 : 310.86 = 185.18 : x
  2. Step 2: Convert to fraction form
    207.05/310.86 = 185.18/x
  3. Step 3: Cross multiply
    207.05x = 310.86 × 185.18
  4. Step 4: Simplify right side
    207.05x = 57,563.50
  5. Step 5: Solve for x
    x = 57,563.50/207.05
  6. Step 6: Final answer
    x = 278.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.