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Finding the Fourth Proportional to 475.95, 713.05 and 399.41

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Solution

The fourth proportional to 475.95, 713.05 and 399.41 is: 598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.95 : 713.05 = 399.41 : x
  2. Step 2: Convert to fraction form
    475.95/713.05 = 399.41/x
  3. Step 3: Cross multiply
    475.95x = 713.05 × 399.41
  4. Step 4: Simplify right side
    475.95x = 284,794.74
  5. Step 5: Solve for x
    x = 284,794.74/475.95
  6. Step 6: Final answer
    x = 598.37

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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.