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Finding the Fourth Proportional to 1,368.49, 2,051.52 and 443.47

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Solution

The fourth proportional to 1,368.49, 2,051.52 and 443.47 is: 664.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.49 : 2,051.52 = 443.47 : x
  2. Step 2: Convert to fraction form
    1,368.49/2,051.52 = 443.47/x
  3. Step 3: Cross multiply
    1,368.49x = 2,051.52 × 443.47
  4. Step 4: Simplify right side
    1,368.49x = 909,787.57
  5. Step 5: Solve for x
    x = 909,787.57/1,368.49
  6. Step 6: Final answer
    x = 664.81

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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.