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Finding the Fourth Proportional to 515.36, 772.97 and 150.18

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Solution

The fourth proportional to 515.36, 772.97 and 150.18 is: 225.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.36 : 772.97 = 150.18 : x
  2. Step 2: Convert to fraction form
    515.36/772.97 = 150.18/x
  3. Step 3: Cross multiply
    515.36x = 772.97 × 150.18
  4. Step 4: Simplify right side
    515.36x = 116,083.88
  5. Step 5: Solve for x
    x = 116,083.88/515.36
  6. Step 6: Final answer
    x = 225.25

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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.