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Finding the Fourth Proportional to 804.79, 1,110.68 and 673.57

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Solution

The fourth proportional to 804.79, 1,110.68 and 673.57 is: 929.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.79 : 1,110.68 = 673.57 : x
  2. Step 2: Convert to fraction form
    804.79/1,110.68 = 673.57/x
  3. Step 3: Cross multiply
    804.79x = 1,110.68 × 673.57
  4. Step 4: Simplify right side
    804.79x = 748,120.73
  5. Step 5: Solve for x
    x = 748,120.73/804.79
  6. Step 6: Final answer
    x = 929.59

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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.