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Finding the Fourth Proportional to 1,652.75, 2,479.17 and 626.75

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Solution

The fourth proportional to 1,652.75, 2,479.17 and 626.75 is: 940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,652.75 : 2,479.17 = 626.75 : x
  2. Step 2: Convert to fraction form
    1,652.75/2,479.17 = 626.75/x
  3. Step 3: Cross multiply
    1,652.75x = 2,479.17 × 626.75
  4. Step 4: Simplify right side
    1,652.75x = 1,553,819.80
  5. Step 5: Solve for x
    x = 1,553,819.80/1,652.75
  6. Step 6: Final answer
    x = 940.14

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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.