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Finding the Fourth Proportional to 1,337.21, 2,005.80 and 363.31

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Solution

The fourth proportional to 1,337.21, 2,005.80 and 363.31 is: 544.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.21 : 2,005.80 = 363.31 : x
  2. Step 2: Convert to fraction form
    1,337.21/2,005.80 = 363.31/x
  3. Step 3: Cross multiply
    1,337.21x = 2,005.80 × 363.31
  4. Step 4: Simplify right side
    1,337.21x = 728,718.08
  5. Step 5: Solve for x
    x = 728,718.08/1,337.21
  6. Step 6: Final answer
    x = 544.96

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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.