Home / 1,193.13-1,646.60-669.20

Finding the Fourth Proportional to 1,193.13, 1,646.60 and 669.20

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Solution

The fourth proportional to 1,193.13, 1,646.60 and 669.20 is: 923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.13 : 1,646.60 = 669.20 : x
  2. Step 2: Convert to fraction form
    1,193.13/1,646.60 = 669.20/x
  3. Step 3: Cross multiply
    1,193.13x = 1,646.60 × 669.20
  4. Step 4: Simplify right side
    1,193.13x = 1,101,893.14
  5. Step 5: Solve for x
    x = 1,101,893.14/1,193.13
  6. Step 6: Final answer
    x = 923.53

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Half scale
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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.