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Finding the Fourth Proportional to 2,284.52, 3,426.78 and 553.15

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Solution

The fourth proportional to 2,284.52, 3,426.78 and 553.15 is: 829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,284.52 : 3,426.78 = 553.15 : x
  2. Step 2: Convert to fraction form
    2,284.52/3,426.78 = 553.15/x
  3. Step 3: Cross multiply
    2,284.52x = 3,426.78 × 553.15
  4. Step 4: Simplify right side
    2,284.52x = 1,895,506.22
  5. Step 5: Solve for x
    x = 1,895,506.22/2,284.52
  6. Step 6: Final answer
    x = 829.72

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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.