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Finding the Fourth Proportional to 508.43, 763.09 and 248.63

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Solution

The fourth proportional to 508.43, 763.09 and 248.63 is: 373.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.43 : 763.09 = 248.63 : x
  2. Step 2: Convert to fraction form
    508.43/763.09 = 248.63/x
  3. Step 3: Cross multiply
    508.43x = 763.09 × 248.63
  4. Step 4: Simplify right side
    508.43x = 189,722.63
  5. Step 5: Solve for x
    x = 189,722.63/508.43
  6. Step 6: Final answer
    x = 373.15

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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.