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Finding the Fourth Proportional to 1,701.93, 2,551.78 and 824.20

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Solution

The fourth proportional to 1,701.93, 2,551.78 and 824.20 is: 1,235.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,701.93 : 2,551.78 = 824.20 : x
  2. Step 2: Convert to fraction form
    1,701.93/2,551.78 = 824.20/x
  3. Step 3: Cross multiply
    1,701.93x = 2,551.78 × 824.20
  4. Step 4: Simplify right side
    1,701.93x = 2,103,177.08
  5. Step 5: Solve for x
    x = 2,103,177.08/1,701.93
  6. Step 6: Final answer
    x = 1,235.76

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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.