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Finding the Fourth Proportional to 1,367.48, 2,051.55 and 443.13

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Solution

The fourth proportional to 1,367.48, 2,051.55 and 443.13 is: 664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.48 : 2,051.55 = 443.13 : x
  2. Step 2: Convert to fraction form
    1,367.48/2,051.55 = 443.13/x
  3. Step 3: Cross multiply
    1,367.48x = 2,051.55 × 443.13
  4. Step 4: Simplify right side
    1,367.48x = 909,103.35
  5. Step 5: Solve for x
    x = 909,103.35/1,367.48
  6. Step 6: Final answer
    x = 664.80

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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.