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Finding the Fourth Proportional to 450.70, 675.97 and 207.20

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Solution

The fourth proportional to 450.70, 675.97 and 207.20 is: 310.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.70 : 675.97 = 207.20 : x
  2. Step 2: Convert to fraction form
    450.70/675.97 = 207.20/x
  3. Step 3: Cross multiply
    450.70x = 675.97 × 207.20
  4. Step 4: Simplify right side
    450.70x = 140,062.16
  5. Step 5: Solve for x
    x = 140,062.16/450.70
  6. Step 6: Final answer
    x = 310.77

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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.