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Finding the Fourth Proportional to 2,197.78, 3,296.55 and 554.22

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Solution

The fourth proportional to 2,197.78, 3,296.55 and 554.22 is: 831.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,197.78 : 3,296.55 = 554.22 : x
  2. Step 2: Convert to fraction form
    2,197.78/3,296.55 = 554.22/x
  3. Step 3: Cross multiply
    2,197.78x = 3,296.55 × 554.22
  4. Step 4: Simplify right side
    2,197.78x = 1,827,013.94
  5. Step 5: Solve for x
    x = 1,827,013.94/2,197.78
  6. Step 6: Final answer
    x = 831.30

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1.5x scale

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.