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Finding the Fourth Proportional to 625.39, 937.70 and 214.49

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Solution

The fourth proportional to 625.39, 937.70 and 214.49 is: 321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.39 : 937.70 = 214.49 : x
  2. Step 2: Convert to fraction form
    625.39/937.70 = 214.49/x
  3. Step 3: Cross multiply
    625.39x = 937.70 × 214.49
  4. Step 4: Simplify right side
    625.39x = 201,126.20
  5. Step 5: Solve for x
    x = 201,126.20/625.39
  6. Step 6: Final answer
    x = 321.60

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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.