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Finding the Fourth Proportional to 604.23, 905.68 and 395.75

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Solution

The fourth proportional to 604.23, 905.68 and 395.75 is: 593.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.23 : 905.68 = 395.75 : x
  2. Step 2: Convert to fraction form
    604.23/905.68 = 395.75/x
  3. Step 3: Cross multiply
    604.23x = 905.68 × 395.75
  4. Step 4: Simplify right side
    604.23x = 358,417.34
  5. Step 5: Solve for x
    x = 358,417.34/604.23
  6. Step 6: Final answer
    x = 593.18

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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.