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Finding the Fourth Proportional to 1,090.98, 1,637.09 and 441.77

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Solution

The fourth proportional to 1,090.98, 1,637.09 and 441.77 is: 662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.98 : 1,637.09 = 441.77 : x
  2. Step 2: Convert to fraction form
    1,090.98/1,637.09 = 441.77/x
  3. Step 3: Cross multiply
    1,090.98x = 1,637.09 × 441.77
  4. Step 4: Simplify right side
    1,090.98x = 723,206.86
  5. Step 5: Solve for x
    x = 723,206.86/1,090.98
  6. Step 6: Final answer
    x = 662.90

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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.