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Finding the Fourth Proportional to 2,283.02, 3,424.40 and 821.99

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Solution

The fourth proportional to 2,283.02, 3,424.40 and 821.99 is: 1,232.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,283.02 : 3,424.40 = 821.99 : x
  2. Step 2: Convert to fraction form
    2,283.02/3,424.40 = 821.99/x
  3. Step 3: Cross multiply
    2,283.02x = 3,424.40 × 821.99
  4. Step 4: Simplify right side
    2,283.02x = 2,814,801.32
  5. Step 5: Solve for x
    x = 2,814,801.32/2,283.02
  6. Step 6: Final answer
    x = 1,232.93

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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.