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Finding the Fourth Proportional to 1,476.40, 2,037.46 and 813.27

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Solution

The fourth proportional to 1,476.40, 2,037.46 and 813.27 is: 1,122.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.40 : 2,037.46 = 813.27 : x
  2. Step 2: Convert to fraction form
    1,476.40/2,037.46 = 813.27/x
  3. Step 3: Cross multiply
    1,476.40x = 2,037.46 × 813.27
  4. Step 4: Simplify right side
    1,476.40x = 1,657,005.09
  5. Step 5: Solve for x
    x = 1,657,005.09/1,476.40
  6. Step 6: Final answer
    x = 1,122.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.