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Finding the Fourth Proportional to 1,214.60, 1,676.70 and 794.96

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Solution

The fourth proportional to 1,214.60, 1,676.70 and 794.96 is: 1,097.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.60 : 1,676.70 = 794.96 : x
  2. Step 2: Convert to fraction form
    1,214.60/1,676.70 = 794.96/x
  3. Step 3: Cross multiply
    1,214.60x = 1,676.70 × 794.96
  4. Step 4: Simplify right side
    1,214.60x = 1,332,916.77
  5. Step 5: Solve for x
    x = 1,332,916.77/1,214.60
  6. Step 6: Final answer
    x = 1,097.42

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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.