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Finding the Fourth Proportional to 515.95, 774.10 and 150.79

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Solution

The fourth proportional to 515.95, 774.10 and 150.79 is: 226.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.95 : 774.10 = 150.79 : x
  2. Step 2: Convert to fraction form
    515.95/774.10 = 150.79/x
  3. Step 3: Cross multiply
    515.95x = 774.10 × 150.79
  4. Step 4: Simplify right side
    515.95x = 116,724.04
  5. Step 5: Solve for x
    x = 116,724.04/515.95
  6. Step 6: Final answer
    x = 226.23

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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.