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Finding the Fourth Proportional to 1,193.43, 1,646.69 and 669.45

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Solution

The fourth proportional to 1,193.43, 1,646.69 and 669.45 is: 923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.43 : 1,646.69 = 669.45 : x
  2. Step 2: Convert to fraction form
    1,193.43/1,646.69 = 669.45/x
  3. Step 3: Cross multiply
    1,193.43x = 1,646.69 × 669.45
  4. Step 4: Simplify right side
    1,193.43x = 1,102,373.27
  5. Step 5: Solve for x
    x = 1,102,373.27/1,193.43
  6. Step 6: Final answer
    x = 923.70

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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.