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Finding the Fourth Proportional to 346.09, 515.84 and 326.63

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Solution

The fourth proportional to 346.09, 515.84 and 326.63 is: 486.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.09 : 515.84 = 326.63 : x
  2. Step 2: Convert to fraction form
    346.09/515.84 = 326.63/x
  3. Step 3: Cross multiply
    346.09x = 515.84 × 326.63
  4. Step 4: Simplify right side
    346.09x = 168,487.19
  5. Step 5: Solve for x
    x = 168,487.19/346.09
  6. Step 6: Final answer
    x = 486.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.