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Finding the Fourth Proportional to 529.41, 794.70 and 399.81

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Solution

The fourth proportional to 529.41, 794.70 and 399.81 is: 600.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.41 : 794.70 = 399.81 : x
  2. Step 2: Convert to fraction form
    529.41/794.70 = 399.81/x
  3. Step 3: Cross multiply
    529.41x = 794.70 × 399.81
  4. Step 4: Simplify right side
    529.41x = 317,729.01
  5. Step 5: Solve for x
    x = 317,729.01/529.41
  6. Step 6: Final answer
    x = 600.16

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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.