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Finding the Fourth Proportional to 1,098.45, 1,646.21 and 604.12

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Solution

The fourth proportional to 1,098.45, 1,646.21 and 604.12 is: 905.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.45 : 1,646.21 = 604.12 : x
  2. Step 2: Convert to fraction form
    1,098.45/1,646.21 = 604.12/x
  3. Step 3: Cross multiply
    1,098.45x = 1,646.21 × 604.12
  4. Step 4: Simplify right side
    1,098.45x = 994,497.13
  5. Step 5: Solve for x
    x = 994,497.13/1,098.45
  6. Step 6: Final answer
    x = 905.36

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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.