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Finding the Fourth Proportional to 604.38, 834.56 and 383.72

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Solution

The fourth proportional to 604.38, 834.56 and 383.72 is: 529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.38 : 834.56 = 383.72 : x
  2. Step 2: Convert to fraction form
    604.38/834.56 = 383.72/x
  3. Step 3: Cross multiply
    604.38x = 834.56 × 383.72
  4. Step 4: Simplify right side
    604.38x = 320,237.36
  5. Step 5: Solve for x
    x = 320,237.36/604.38
  6. Step 6: Final answer
    x = 529.86

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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.