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Finding the Fourth Proportional to 418.97, 630.79 and 332.91

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Solution

The fourth proportional to 418.97, 630.79 and 332.91 is: 501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.97 : 630.79 = 332.91 : x
  2. Step 2: Convert to fraction form
    418.97/630.79 = 332.91/x
  3. Step 3: Cross multiply
    418.97x = 630.79 × 332.91
  4. Step 4: Simplify right side
    418.97x = 209,995.47
  5. Step 5: Solve for x
    x = 209,995.47/418.97
  6. Step 6: Final answer
    x = 501.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.