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Finding the Fourth Proportional to 1,182.70, 1,629.44 and 933.94

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Solution

The fourth proportional to 1,182.70, 1,629.44 and 933.94 is: 1,286.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.70 : 1,629.44 = 933.94 : x
  2. Step 2: Convert to fraction form
    1,182.70/1,629.44 = 933.94/x
  3. Step 3: Cross multiply
    1,182.70x = 1,629.44 × 933.94
  4. Step 4: Simplify right side
    1,182.70x = 1,521,799.19
  5. Step 5: Solve for x
    x = 1,521,799.19/1,182.70
  6. Step 6: Final answer
    x = 1,286.72

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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.