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Finding the Fourth Proportional to 346.82, 520.91 and 210.13

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Solution

The fourth proportional to 346.82, 520.91 and 210.13 is: 315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.82 : 520.91 = 210.13 : x
  2. Step 2: Convert to fraction form
    346.82/520.91 = 210.13/x
  3. Step 3: Cross multiply
    346.82x = 520.91 × 210.13
  4. Step 4: Simplify right side
    346.82x = 109,458.82
  5. Step 5: Solve for x
    x = 109,458.82/346.82
  6. Step 6: Final answer
    x = 315.61

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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.