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Finding the Fourth Proportional to 1,352.68, 2,029.12 and 378.77

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Solution

The fourth proportional to 1,352.68, 2,029.12 and 378.77 is: 568.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.68 : 2,029.12 = 378.77 : x
  2. Step 2: Convert to fraction form
    1,352.68/2,029.12 = 378.77/x
  3. Step 3: Cross multiply
    1,352.68x = 2,029.12 × 378.77
  4. Step 4: Simplify right side
    1,352.68x = 768,558.69
  5. Step 5: Solve for x
    x = 768,558.69/1,352.68
  6. Step 6: Final answer
    x = 568.18

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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.