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Finding the Fourth Proportional to 1,365.39, 2,048.09 and 499.23

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Solution

The fourth proportional to 1,365.39, 2,048.09 and 499.23 is: 748.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.39 : 2,048.09 = 499.23 : x
  2. Step 2: Convert to fraction form
    1,365.39/2,048.09 = 499.23/x
  3. Step 3: Cross multiply
    1,365.39x = 2,048.09 × 499.23
  4. Step 4: Simplify right side
    1,365.39x = 1,022,465.47
  5. Step 5: Solve for x
    x = 1,022,465.47/1,365.39
  6. Step 6: Final answer
    x = 748.85

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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.