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Finding the Fourth Proportional to 510.33, 765.21 and 263.28

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Solution

The fourth proportional to 510.33, 765.21 and 263.28 is: 394.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.33 : 765.21 = 263.28 : x
  2. Step 2: Convert to fraction form
    510.33/765.21 = 263.28/x
  3. Step 3: Cross multiply
    510.33x = 765.21 × 263.28
  4. Step 4: Simplify right side
    510.33x = 201,464.49
  5. Step 5: Solve for x
    x = 201,464.49/510.33
  6. Step 6: Final answer
    x = 394.77

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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.