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Finding the Fourth Proportional to 439.13, 657.18 and 352.26

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Solution

The fourth proportional to 439.13, 657.18 and 352.26 is: 527.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.13 : 657.18 = 352.26 : x
  2. Step 2: Convert to fraction form
    439.13/657.18 = 352.26/x
  3. Step 3: Cross multiply
    439.13x = 657.18 × 352.26
  4. Step 4: Simplify right side
    439.13x = 231,498.23
  5. Step 5: Solve for x
    x = 231,498.23/439.13
  6. Step 6: Final answer
    x = 527.17

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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.