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Finding the Fourth Proportional to 1,764.96, 2,648.45 and 669.03

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Solution

The fourth proportional to 1,764.96, 2,648.45 and 669.03 is: 1,003.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764.96 : 2,648.45 = 669.03 : x
  2. Step 2: Convert to fraction form
    1,764.96/2,648.45 = 669.03/x
  3. Step 3: Cross multiply
    1,764.96x = 2,648.45 × 669.03
  4. Step 4: Simplify right side
    1,764.96x = 1,771,892.50
  5. Step 5: Solve for x
    x = 1,771,892.50/1,764.96
  6. Step 6: Final answer
    x = 1,003.93

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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.