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Finding the Fourth Proportional to 604.19, 905.55 and 535.85

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Solution

The fourth proportional to 604.19, 905.55 and 535.85 is: 803.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.19 : 905.55 = 535.85 : x
  2. Step 2: Convert to fraction form
    604.19/905.55 = 535.85/x
  3. Step 3: Cross multiply
    604.19x = 905.55 × 535.85
  4. Step 4: Simplify right side
    604.19x = 485,235.83
  5. Step 5: Solve for x
    x = 485,235.83/604.19
  6. Step 6: Final answer
    x = 803.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.