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Finding the Fourth Proportional to 1,504.72, 2,256.82 and 409.17

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Solution

The fourth proportional to 1,504.72, 2,256.82 and 409.17 is: 613.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,504.72 : 2,256.82 = 409.17 : x
  2. Step 2: Convert to fraction form
    1,504.72/2,256.82 = 409.17/x
  3. Step 3: Cross multiply
    1,504.72x = 2,256.82 × 409.17
  4. Step 4: Simplify right side
    1,504.72x = 923,422.02
  5. Step 5: Solve for x
    x = 923,422.02/1,504.72
  6. Step 6: Final answer
    x = 613.68

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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.