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Finding the Fourth Proportional to 479.97, 662.45 and 376.29

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Solution

The fourth proportional to 479.97, 662.45 and 376.29 is: 519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.97 : 662.45 = 376.29 : x
  2. Step 2: Convert to fraction form
    479.97/662.45 = 376.29/x
  3. Step 3: Cross multiply
    479.97x = 662.45 × 376.29
  4. Step 4: Simplify right side
    479.97x = 249,271.43
  5. Step 5: Solve for x
    x = 249,271.43/479.97
  6. Step 6: Final answer
    x = 519.35

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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.