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Finding the Fourth Proportional to 346.05, 520.29 and 306.09

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Solution

The fourth proportional to 346.05, 520.29 and 306.09 is: 460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.05 : 520.29 = 306.09 : x
  2. Step 2: Convert to fraction form
    346.05/520.29 = 306.09/x
  3. Step 3: Cross multiply
    346.05x = 520.29 × 306.09
  4. Step 4: Simplify right side
    346.05x = 159,255.57
  5. Step 5: Solve for x
    x = 159,255.57/346.05
  6. Step 6: Final answer
    x = 460.21

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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.