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Finding the Fourth Proportional to 1,350.96, 2,026.80 and 485.52

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Solution

The fourth proportional to 1,350.96, 2,026.80 and 485.52 is: 728.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.96 : 2,026.80 = 485.52 : x
  2. Step 2: Convert to fraction form
    1,350.96/2,026.80 = 485.52/x
  3. Step 3: Cross multiply
    1,350.96x = 2,026.80 × 485.52
  4. Step 4: Simplify right side
    1,350.96x = 984,051.94
  5. Step 5: Solve for x
    x = 984,051.94/1,350.96
  6. Step 6: Final answer
    x = 728.41

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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.