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Finding the Fourth Proportional to 471.42, 707.13 and 326.84

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Solution

The fourth proportional to 471.42, 707.13 and 326.84 is: 490.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.42 : 707.13 = 326.84 : x
  2. Step 2: Convert to fraction form
    471.42/707.13 = 326.84/x
  3. Step 3: Cross multiply
    471.42x = 707.13 × 326.84
  4. Step 4: Simplify right side
    471.42x = 231,114.83
  5. Step 5: Solve for x
    x = 231,114.83/471.42
  6. Step 6: Final answer
    x = 490.25

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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.