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Finding the Fourth Proportional to 2,290.34, 3,436.05 and 829.50

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Solution

The fourth proportional to 2,290.34, 3,436.05 and 829.50 is: 1,244.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.34 : 3,436.05 = 829.50 : x
  2. Step 2: Convert to fraction form
    2,290.34/3,436.05 = 829.50/x
  3. Step 3: Cross multiply
    2,290.34x = 3,436.05 × 829.50
  4. Step 4: Simplify right side
    2,290.34x = 2,850,203.48
  5. Step 5: Solve for x
    x = 2,850,203.48/2,290.34
  6. Step 6: Final answer
    x = 1,244.45

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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.