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Finding the Fourth Proportional to 484.71, 726.99 and 210.80

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Solution

The fourth proportional to 484.71, 726.99 and 210.80 is: 316.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.71 : 726.99 = 210.80 : x
  2. Step 2: Convert to fraction form
    484.71/726.99 = 210.80/x
  3. Step 3: Cross multiply
    484.71x = 726.99 × 210.80
  4. Step 4: Simplify right side
    484.71x = 153,249.49
  5. Step 5: Solve for x
    x = 153,249.49/484.71
  6. Step 6: Final answer
    x = 316.17

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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.