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Finding the Fourth Proportional to 1,669.60, 2,502.72 and 629.44

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Solution

The fourth proportional to 1,669.60, 2,502.72 and 629.44 is: 943.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.60 : 2,502.72 = 629.44 : x
  2. Step 2: Convert to fraction form
    1,669.60/2,502.72 = 629.44/x
  3. Step 3: Cross multiply
    1,669.60x = 2,502.72 × 629.44
  4. Step 4: Simplify right side
    1,669.60x = 1,575,312.08
  5. Step 5: Solve for x
    x = 1,575,312.08/1,669.60
  6. Step 6: Final answer
    x = 943.53

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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.