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Finding the Fourth Proportional to 604.49, 833.21 and 407.66

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Solution

The fourth proportional to 604.49, 833.21 and 407.66 is: 561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.49 : 833.21 = 407.66 : x
  2. Step 2: Convert to fraction form
    604.49/833.21 = 407.66/x
  3. Step 3: Cross multiply
    604.49x = 833.21 × 407.66
  4. Step 4: Simplify right side
    604.49x = 339,660.18
  5. Step 5: Solve for x
    x = 339,660.18/604.49
  6. Step 6: Final answer
    x = 561.90

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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.