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Finding the Fourth Proportional to 508.64, 763 and 265.36

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Solution

The fourth proportional to 508.64, 763 and 265.36 is: 398.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.64 : 763 = 265.36 : x
  2. Step 2: Convert to fraction form
    508.64/763 = 265.36/x
  3. Step 3: Cross multiply
    508.64x = 763 × 265.36
  4. Step 4: Simplify right side
    508.64x = 202,469.68
  5. Step 5: Solve for x
    x = 202,469.68/508.64
  6. Step 6: Final answer
    x = 398.06

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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.