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Finding the Fourth Proportional to 480.90, 663.66 and 294.47

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Solution

The fourth proportional to 480.90, 663.66 and 294.47 is: 406.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.90 : 663.66 = 294.47 : x
  2. Step 2: Convert to fraction form
    480.90/663.66 = 294.47/x
  3. Step 3: Cross multiply
    480.90x = 663.66 × 294.47
  4. Step 4: Simplify right side
    480.90x = 195,429.62
  5. Step 5: Solve for x
    x = 195,429.62/480.90
  6. Step 6: Final answer
    x = 406.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.