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Finding the Fourth Proportional to 584.85, 808.25 and 479.78

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Solution

The fourth proportional to 584.85, 808.25 and 479.78 is: 663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.85 : 808.25 = 479.78 : x
  2. Step 2: Convert to fraction form
    584.85/808.25 = 479.78/x
  3. Step 3: Cross multiply
    584.85x = 808.25 × 479.78
  4. Step 4: Simplify right side
    584.85x = 387,775.74
  5. Step 5: Solve for x
    x = 387,775.74/584.85
  6. Step 6: Final answer
    x = 663.03

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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.