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Finding the Fourth Proportional to 514.94, 772.41 and 172.94

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Solution

The fourth proportional to 514.94, 772.41 and 172.94 is: 259.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.94 : 772.41 = 172.94 : x
  2. Step 2: Convert to fraction form
    514.94/772.41 = 172.94/x
  3. Step 3: Cross multiply
    514.94x = 772.41 × 172.94
  4. Step 4: Simplify right side
    514.94x = 133,580.59
  5. Step 5: Solve for x
    x = 133,580.59/514.94
  6. Step 6: Final answer
    x = 259.41

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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.