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Finding the Fourth Proportional to 515.98, 773.57 and 238.15

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Solution

The fourth proportional to 515.98, 773.57 and 238.15 is: 357.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.98 : 773.57 = 238.15 : x
  2. Step 2: Convert to fraction form
    515.98/773.57 = 238.15/x
  3. Step 3: Cross multiply
    515.98x = 773.57 × 238.15
  4. Step 4: Simplify right side
    515.98x = 184,224.50
  5. Step 5: Solve for x
    x = 184,224.50/515.98
  6. Step 6: Final answer
    x = 357.04

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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.