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Finding the Fourth Proportional to 584.80, 806.08 and 479.70

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Solution

The fourth proportional to 584.80, 806.08 and 479.70 is: 661.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.80 : 806.08 = 479.70 : x
  2. Step 2: Convert to fraction form
    584.80/806.08 = 479.70/x
  3. Step 3: Cross multiply
    584.80x = 806.08 × 479.70
  4. Step 4: Simplify right side
    584.80x = 386,676.58
  5. Step 5: Solve for x
    x = 386,676.58/584.80
  6. Step 6: Final answer
    x = 661.21

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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.