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Finding the Fourth Proportional to 1,371.44, 2,056.85 and 397.62

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Solution

The fourth proportional to 1,371.44, 2,056.85 and 397.62 is: 596.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.44 : 2,056.85 = 397.62 : x
  2. Step 2: Convert to fraction form
    1,371.44/2,056.85 = 397.62/x
  3. Step 3: Cross multiply
    1,371.44x = 2,056.85 × 397.62
  4. Step 4: Simplify right side
    1,371.44x = 817,842.71
  5. Step 5: Solve for x
    x = 817,842.71/1,371.44
  6. Step 6: Final answer
    x = 596.34

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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.