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Finding the Fourth Proportional to 515.44, 710.99 and 338.41

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Solution

The fourth proportional to 515.44, 710.99 and 338.41 is: 466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.44 : 710.99 = 338.41 : x
  2. Step 2: Convert to fraction form
    515.44/710.99 = 338.41/x
  3. Step 3: Cross multiply
    515.44x = 710.99 × 338.41
  4. Step 4: Simplify right side
    515.44x = 240,607.92
  5. Step 5: Solve for x
    x = 240,607.92/515.44
  6. Step 6: Final answer
    x = 466.80

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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.