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Finding the Fourth Proportional to 515.25, 771.21 and 332.37

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Solution

The fourth proportional to 515.25, 771.21 and 332.37 is: 497.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.25 : 771.21 = 332.37 : x
  2. Step 2: Convert to fraction form
    515.25/771.21 = 332.37/x
  3. Step 3: Cross multiply
    515.25x = 771.21 × 332.37
  4. Step 4: Simplify right side
    515.25x = 256,327.07
  5. Step 5: Solve for x
    x = 256,327.07/515.25
  6. Step 6: Final answer
    x = 497.48

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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.