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Finding the Fourth Proportional to 514.84, 772.27 and 172.84

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Solution

The fourth proportional to 514.84, 772.27 and 172.84 is: 259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.84 : 772.27 = 172.84 : x
  2. Step 2: Convert to fraction form
    514.84/772.27 = 172.84/x
  3. Step 3: Cross multiply
    514.84x = 772.27 × 172.84
  4. Step 4: Simplify right side
    514.84x = 133,479.15
  5. Step 5: Solve for x
    x = 133,479.15/514.84
  6. Step 6: Final answer
    x = 259.26

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Double scale
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Similar ratio
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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.