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Finding the Fourth Proportional to 1,446.02, 1,995.45 and 816.54

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Solution

The fourth proportional to 1,446.02, 1,995.45 and 816.54 is: 1,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.02 : 1,995.45 = 816.54 : x
  2. Step 2: Convert to fraction form
    1,446.02/1,995.45 = 816.54/x
  3. Step 3: Cross multiply
    1,446.02x = 1,995.45 × 816.54
  4. Step 4: Simplify right side
    1,446.02x = 1,629,364.74
  5. Step 5: Solve for x
    x = 1,629,364.74/1,446.02
  6. Step 6: Final answer
    x = 1,126.80

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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.