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Finding the Fourth Proportional to 1,455.99, 2,009.25 and 866.54

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Solution

The fourth proportional to 1,455.99, 2,009.25 and 866.54 is: 1,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.99 : 2,009.25 = 866.54 : x
  2. Step 2: Convert to fraction form
    1,455.99/2,009.25 = 866.54/x
  3. Step 3: Cross multiply
    1,455.99x = 2,009.25 × 866.54
  4. Step 4: Simplify right side
    1,455.99x = 1,741,085.45
  5. Step 5: Solve for x
    x = 1,741,085.45/1,455.99
  6. Step 6: Final answer
    x = 1,195.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.