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Finding the Fourth Proportional to 1,362.06, 2,043.41 and 437.76

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Solution

The fourth proportional to 1,362.06, 2,043.41 and 437.76 is: 656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.06 : 2,043.41 = 437.76 : x
  2. Step 2: Convert to fraction form
    1,362.06/2,043.41 = 437.76/x
  3. Step 3: Cross multiply
    1,362.06x = 2,043.41 × 437.76
  4. Step 4: Simplify right side
    1,362.06x = 894,520.97
  5. Step 5: Solve for x
    x = 894,520.97/1,362.06
  6. Step 6: Final answer
    x = 656.74

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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.