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Finding the Fourth Proportional to 604.28, 834.57 and 407.45

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Solution

The fourth proportional to 604.28, 834.57 and 407.45 is: 562.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.28 : 834.57 = 407.45 : x
  2. Step 2: Convert to fraction form
    604.28/834.57 = 407.45/x
  3. Step 3: Cross multiply
    604.28x = 834.57 × 407.45
  4. Step 4: Simplify right side
    604.28x = 340,041.37
  5. Step 5: Solve for x
    x = 340,041.37/604.28
  6. Step 6: Final answer
    x = 562.73

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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.