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Finding the Fourth Proportional to 2,260.80, 3,390.64 and 617.35

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Solution

The fourth proportional to 2,260.80, 3,390.64 and 617.35 is: 925.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.80 : 3,390.64 = 617.35 : x
  2. Step 2: Convert to fraction form
    2,260.80/3,390.64 = 617.35/x
  3. Step 3: Cross multiply
    2,260.80x = 3,390.64 × 617.35
  4. Step 4: Simplify right side
    2,260.80x = 2,093,211.60
  5. Step 5: Solve for x
    x = 2,093,211.60/2,260.80
  6. Step 6: Final answer
    x = 925.87

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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.