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Finding the Fourth Proportional to 1,394.38, 2,090.27 and 469.29

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Solution

The fourth proportional to 1,394.38, 2,090.27 and 469.29 is: 703.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.38 : 2,090.27 = 469.29 : x
  2. Step 2: Convert to fraction form
    1,394.38/2,090.27 = 469.29/x
  3. Step 3: Cross multiply
    1,394.38x = 2,090.27 × 469.29
  4. Step 4: Simplify right side
    1,394.38x = 980,945.69
  5. Step 5: Solve for x
    x = 980,945.69/1,394.38
  6. Step 6: Final answer
    x = 703.50

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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.