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Finding the Fourth Proportional to 207.06, 310.80 and 98.94

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Solution

The fourth proportional to 207.06, 310.80 and 98.94 is: 148.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.06 : 310.80 = 98.94 : x
  2. Step 2: Convert to fraction form
    207.06/310.80 = 98.94/x
  3. Step 3: Cross multiply
    207.06x = 310.80 × 98.94
  4. Step 4: Simplify right side
    207.06x = 30,750.55
  5. Step 5: Solve for x
    x = 30,750.55/207.06
  6. Step 6: Final answer
    x = 148.51

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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.