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Finding the Fourth Proportional to 1,365.87, 2,048.19 and 488.08

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Solution

The fourth proportional to 1,365.87, 2,048.19 and 488.08 is: 731.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.87 : 2,048.19 = 488.08 : x
  2. Step 2: Convert to fraction form
    1,365.87/2,048.19 = 488.08/x
  3. Step 3: Cross multiply
    1,365.87x = 2,048.19 × 488.08
  4. Step 4: Simplify right side
    1,365.87x = 999,680.58
  5. Step 5: Solve for x
    x = 999,680.58/1,365.87
  6. Step 6: Final answer
    x = 731.90

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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.