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Finding the Fourth Proportional to 510.07, 765.21 and 163.39

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Solution

The fourth proportional to 510.07, 765.21 and 163.39 is: 245.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.07 : 765.21 = 163.39 : x
  2. Step 2: Convert to fraction form
    510.07/765.21 = 163.39/x
  3. Step 3: Cross multiply
    510.07x = 765.21 × 163.39
  4. Step 4: Simplify right side
    510.07x = 125,027.66
  5. Step 5: Solve for x
    x = 125,027.66/510.07
  6. Step 6: Final answer
    x = 245.12

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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.