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Finding the Fourth Proportional to 515.00, 772.51 and 168.33

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Solution

The fourth proportional to 515.00, 772.51 and 168.33 is: 252.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.00 : 772.51 = 168.33 : x
  2. Step 2: Convert to fraction form
    515.00/772.51 = 168.33/x
  3. Step 3: Cross multiply
    515.00x = 772.51 × 168.33
  4. Step 4: Simplify right side
    515.00x = 130,038.08
  5. Step 5: Solve for x
    x = 130,038.08/515.00
  6. Step 6: Final answer
    x = 252.50

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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.