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Finding the Fourth Proportional to 529.05, 793.92 and 477.81

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Solution

The fourth proportional to 529.05, 793.92 and 477.81 is: 717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.05 : 793.92 = 477.81 : x
  2. Step 2: Convert to fraction form
    529.05/793.92 = 477.81/x
  3. Step 3: Cross multiply
    529.05x = 793.92 × 477.81
  4. Step 4: Simplify right side
    529.05x = 379,342.92
  5. Step 5: Solve for x
    x = 379,342.92/529.05
  6. Step 6: Final answer
    x = 717.03

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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.