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Finding the Fourth Proportional to 578.97, 868.64 and 335.36

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Solution

The fourth proportional to 578.97, 868.64 and 335.36 is: 503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.97 : 868.64 = 335.36 : x
  2. Step 2: Convert to fraction form
    578.97/868.64 = 335.36/x
  3. Step 3: Cross multiply
    578.97x = 868.64 × 335.36
  4. Step 4: Simplify right side
    578.97x = 291,307.61
  5. Step 5: Solve for x
    x = 291,307.61/578.97
  6. Step 6: Final answer
    x = 503.15

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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.