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Finding the Fourth Proportional to 1,627.68, 2,245.80 and 964.69

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Solution

The fourth proportional to 1,627.68, 2,245.80 and 964.69 is: 1,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.68 : 2,245.80 = 964.69 : x
  2. Step 2: Convert to fraction form
    1,627.68/2,245.80 = 964.69/x
  3. Step 3: Cross multiply
    1,627.68x = 2,245.80 × 964.69
  4. Step 4: Simplify right side
    1,627.68x = 2,166,500.80
  5. Step 5: Solve for x
    x = 2,166,500.80/1,627.68
  6. Step 6: Final answer
    x = 1,331.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.