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Finding the Fourth Proportional to 2,290.28, 3,435.44 and 646.88

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Solution

The fourth proportional to 2,290.28, 3,435.44 and 646.88 is: 970.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.28 : 3,435.44 = 646.88 : x
  2. Step 2: Convert to fraction form
    2,290.28/3,435.44 = 646.88/x
  3. Step 3: Cross multiply
    2,290.28x = 3,435.44 × 646.88
  4. Step 4: Simplify right side
    2,290.28x = 2,222,317.43
  5. Step 5: Solve for x
    x = 2,222,317.43/2,290.28
  6. Step 6: Final answer
    x = 970.33

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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.