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Finding the Fourth Proportional to 804.96, 1,207.53 and 439.56

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Solution

The fourth proportional to 804.96, 1,207.53 and 439.56 is: 659.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.96 : 1,207.53 = 439.56 : x
  2. Step 2: Convert to fraction form
    804.96/1,207.53 = 439.56/x
  3. Step 3: Cross multiply
    804.96x = 1,207.53 × 439.56
  4. Step 4: Simplify right side
    804.96x = 530,781.89
  5. Step 5: Solve for x
    x = 530,781.89/804.96
  6. Step 6: Final answer
    x = 659.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.