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Finding the Fourth Proportional to 1,090.74, 1,636.71 and 604.06

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Solution

The fourth proportional to 1,090.74, 1,636.71 and 604.06 is: 906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.74 : 1,636.71 = 604.06 : x
  2. Step 2: Convert to fraction form
    1,090.74/1,636.71 = 604.06/x
  3. Step 3: Cross multiply
    1,090.74x = 1,636.71 × 604.06
  4. Step 4: Simplify right side
    1,090.74x = 988,671.04
  5. Step 5: Solve for x
    x = 988,671.04/1,090.74
  6. Step 6: Final answer
    x = 906.42

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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.