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Finding the Fourth Proportional to 646.89, 892.74 and 367.13

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Solution

The fourth proportional to 646.89, 892.74 and 367.13 is: 506.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.89 : 892.74 = 367.13 : x
  2. Step 2: Convert to fraction form
    646.89/892.74 = 367.13/x
  3. Step 3: Cross multiply
    646.89x = 892.74 × 367.13
  4. Step 4: Simplify right side
    646.89x = 327,747.17
  5. Step 5: Solve for x
    x = 327,747.17/646.89
  6. Step 6: Final answer
    x = 506.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.