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Finding the Fourth Proportional to 1,394.01, 1,924.16 and 834.57

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Solution

The fourth proportional to 1,394.01, 1,924.16 and 834.57 is: 1,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.01 : 1,924.16 = 834.57 : x
  2. Step 2: Convert to fraction form
    1,394.01/1,924.16 = 834.57/x
  3. Step 3: Cross multiply
    1,394.01x = 1,924.16 × 834.57
  4. Step 4: Simplify right side
    1,394.01x = 1,605,842.04
  5. Step 5: Solve for x
    x = 1,605,842.04/1,394.01
  6. Step 6: Final answer
    x = 1,151.96

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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.