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Finding the Fourth Proportional to 584.75, 806.96 and 322.78

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Solution

The fourth proportional to 584.75, 806.96 and 322.78 is: 445.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.75 : 806.96 = 322.78 : x
  2. Step 2: Convert to fraction form
    584.75/806.96 = 322.78/x
  3. Step 3: Cross multiply
    584.75x = 806.96 × 322.78
  4. Step 4: Simplify right side
    584.75x = 260,470.55
  5. Step 5: Solve for x
    x = 260,470.55/584.75
  6. Step 6: Final answer
    x = 445.44

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Find fourth proportional to 292.38, 403.48 and 161.39
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1.5x scale

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.