Home / 1,193.21-1,646.70-669.32

Finding the Fourth Proportional to 1,193.21, 1,646.70 and 669.32

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Solution

The fourth proportional to 1,193.21, 1,646.70 and 669.32 is: 923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.21 : 1,646.70 = 669.32 : x
  2. Step 2: Convert to fraction form
    1,193.21/1,646.70 = 669.32/x
  3. Step 3: Cross multiply
    1,193.21x = 1,646.70 × 669.32
  4. Step 4: Simplify right side
    1,193.21x = 1,102,169.24
  5. Step 5: Solve for x
    x = 1,102,169.24/1,193.21
  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.