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Finding the Fourth Proportional to 1,343.61, 2,011.10 and 908.37

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Solution

The fourth proportional to 1,343.61, 2,011.10 and 908.37 is: 1,359.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.61 : 2,011.10 = 908.37 : x
  2. Step 2: Convert to fraction form
    1,343.61/2,011.10 = 908.37/x
  3. Step 3: Cross multiply
    1,343.61x = 2,011.10 × 908.37
  4. Step 4: Simplify right side
    1,343.61x = 1,826,818.37
  5. Step 5: Solve for x
    x = 1,826,818.37/1,343.61
  6. Step 6: Final answer
    x = 1,359.63

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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.