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Finding the Fourth Proportional to 418.94, 578.20 and 244.25

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Solution

The fourth proportional to 418.94, 578.20 and 244.25 is: 337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.94 : 578.20 = 244.25 : x
  2. Step 2: Convert to fraction form
    418.94/578.20 = 244.25/x
  3. Step 3: Cross multiply
    418.94x = 578.20 × 244.25
  4. Step 4: Simplify right side
    418.94x = 141,224.21
  5. Step 5: Solve for x
    x = 141,224.21/418.94
  6. Step 6: Final answer
    x = 337.10

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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.