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Finding the Fourth Proportional to 521.73, 719.69 and 374.18

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Solution

The fourth proportional to 521.73, 719.69 and 374.18 is: 516.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.73 : 719.69 = 374.18 : x
  2. Step 2: Convert to fraction form
    521.73/719.69 = 374.18/x
  3. Step 3: Cross multiply
    521.73x = 719.69 × 374.18
  4. Step 4: Simplify right side
    521.73x = 269,288.13
  5. Step 5: Solve for x
    x = 269,288.13/521.73
  6. Step 6: Final answer
    x = 516.14

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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.