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Finding the Fourth Proportional to 529.07, 790.26 and 447.05

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Solution

The fourth proportional to 529.07, 790.26 and 447.05 is: 667.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.07 : 790.26 = 447.05 : x
  2. Step 2: Convert to fraction form
    529.07/790.26 = 447.05/x
  3. Step 3: Cross multiply
    529.07x = 790.26 × 447.05
  4. Step 4: Simplify right side
    529.07x = 353,286.03
  5. Step 5: Solve for x
    x = 353,286.03/529.07
  6. Step 6: Final answer
    x = 667.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.