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Finding the Fourth Proportional to 625.71, 938.33 and 214.84

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Solution

The fourth proportional to 625.71, 938.33 and 214.84 is: 322.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.71 : 938.33 = 214.84 : x
  2. Step 2: Convert to fraction form
    625.71/938.33 = 214.84/x
  3. Step 3: Cross multiply
    625.71x = 938.33 × 214.84
  4. Step 4: Simplify right side
    625.71x = 201,590.82
  5. Step 5: Solve for x
    x = 201,590.82/625.71
  6. Step 6: Final answer
    x = 322.18

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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.