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Finding the Fourth Proportional to 584.60, 804.60 and 418.55

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Solution

The fourth proportional to 584.60, 804.60 and 418.55 is: 576.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.60 : 804.60 = 418.55 : x
  2. Step 2: Convert to fraction form
    584.60/804.60 = 418.55/x
  3. Step 3: Cross multiply
    584.60x = 804.60 × 418.55
  4. Step 4: Simplify right side
    584.60x = 336,761.31
  5. Step 5: Solve for x
    x = 336,761.31/584.60
  6. Step 6: Final answer
    x = 576.06

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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.