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Finding the Fourth Proportional to 521.46, 719.96 and 403.23

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Solution

The fourth proportional to 521.46, 719.96 and 403.23 is: 556.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.46 : 719.96 = 403.23 : x
  2. Step 2: Convert to fraction form
    521.46/719.96 = 403.23/x
  3. Step 3: Cross multiply
    521.46x = 719.96 × 403.23
  4. Step 4: Simplify right side
    521.46x = 290,310.48
  5. Step 5: Solve for x
    x = 290,310.48/521.46
  6. Step 6: Final answer
    x = 556.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.