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Finding the Fourth Proportional to 638.33, 958.18 and 364.50

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Solution

The fourth proportional to 638.33, 958.18 and 364.50 is: 547.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.33 : 958.18 = 364.50 : x
  2. Step 2: Convert to fraction form
    638.33/958.18 = 364.50/x
  3. Step 3: Cross multiply
    638.33x = 958.18 × 364.50
  4. Step 4: Simplify right side
    638.33x = 349,256.38
  5. Step 5: Solve for x
    x = 349,256.38/638.33
  6. Step 6: Final answer
    x = 547.14

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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.