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Finding the Fourth Proportional to 1,966.14, 2,949.65 and 650.30

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Solution

The fourth proportional to 1,966.14, 2,949.65 and 650.30 is: 975.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.14 : 2,949.65 = 650.30 : x
  2. Step 2: Convert to fraction form
    1,966.14/2,949.65 = 650.30/x
  3. Step 3: Cross multiply
    1,966.14x = 2,949.65 × 650.30
  4. Step 4: Simplify right side
    1,966.14x = 1,918,139.40
  5. Step 5: Solve for x
    x = 1,918,139.40/1,966.14
  6. Step 6: Final answer
    x = 975.59

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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.