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Finding the Fourth Proportional to 457.96, 688.05 and 441.56

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Solution

The fourth proportional to 457.96, 688.05 and 441.56 is: 663.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.96 : 688.05 = 441.56 : x
  2. Step 2: Convert to fraction form
    457.96/688.05 = 441.56/x
  3. Step 3: Cross multiply
    457.96x = 688.05 × 441.56
  4. Step 4: Simplify right side
    457.96x = 303,811.92
  5. Step 5: Solve for x
    x = 303,811.92/457.96
  6. Step 6: Final answer
    x = 663.41

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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.