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Finding the Fourth Proportional to 2,309.60, 3,464.85 and 922.70

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Solution

The fourth proportional to 2,309.60, 3,464.85 and 922.70 is: 1,384.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.60 : 3,464.85 = 922.70 : x
  2. Step 2: Convert to fraction form
    2,309.60/3,464.85 = 922.70/x
  3. Step 3: Cross multiply
    2,309.60x = 3,464.85 × 922.70
  4. Step 4: Simplify right side
    2,309.60x = 3,197,017.10
  5. Step 5: Solve for x
    x = 3,197,017.10/2,309.60
  6. Step 6: Final answer
    x = 1,384.23

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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.