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Finding the Fourth Proportional to 1,450.00, 1,999.69 and 1,077.91

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Solution

The fourth proportional to 1,450.00, 1,999.69 and 1,077.91 is: 1,486.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.00 : 1,999.69 = 1,077.91 : x
  2. Step 2: Convert to fraction form
    1,450.00/1,999.69 = 1,077.91/x
  3. Step 3: Cross multiply
    1,450.00x = 1,999.69 × 1,077.91
  4. Step 4: Simplify right side
    1,450.00x = 2,155,478.15
  5. Step 5: Solve for x
    x = 2,155,478.15/1,450.00
  6. Step 6: Final answer
    x = 1,486.54

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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.