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Finding the Fourth Proportional to 2,204.81, 3,307.09 and 561.25

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Solution

The fourth proportional to 2,204.81, 3,307.09 and 561.25 is: 841.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,204.81 : 3,307.09 = 561.25 : x
  2. Step 2: Convert to fraction form
    2,204.81/3,307.09 = 561.25/x
  3. Step 3: Cross multiply
    2,204.81x = 3,307.09 × 561.25
  4. Step 4: Simplify right side
    2,204.81x = 1,856,110.15
  5. Step 5: Solve for x
    x = 1,856,110.15/2,204.81
  6. Step 6: Final answer
    x = 841.85

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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.