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Finding the Fourth Proportional to 1,101.65, 1,650.87 and 1,068.37

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Solution

The fourth proportional to 1,101.65, 1,650.87 and 1,068.37 is: 1,601.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.65 : 1,650.87 = 1,068.37 : x
  2. Step 2: Convert to fraction form
    1,101.65/1,650.87 = 1,068.37/x
  3. Step 3: Cross multiply
    1,101.65x = 1,650.87 × 1,068.37
  4. Step 4: Simplify right side
    1,101.65x = 1,763,739.98
  5. Step 5: Solve for x
    x = 1,763,739.98/1,101.65
  6. Step 6: Final answer
    x = 1,601.00

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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.