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Finding the Fourth Proportional to 625.96, 938.93 and 214.99

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Solution

The fourth proportional to 625.96, 938.93 and 214.99 is: 322.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.96 : 938.93 = 214.99 : x
  2. Step 2: Convert to fraction form
    625.96/938.93 = 214.99/x
  3. Step 3: Cross multiply
    625.96x = 938.93 × 214.99
  4. Step 4: Simplify right side
    625.96x = 201,857.14
  5. Step 5: Solve for x
    x = 201,857.14/625.96
  6. Step 6: Final answer
    x = 322.48

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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.