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Finding the Fourth Proportional to 346.15, 519.98 and 209.26

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Solution

The fourth proportional to 346.15, 519.98 and 209.26 is: 314.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.15 : 519.98 = 209.26 : x
  2. Step 2: Convert to fraction form
    346.15/519.98 = 209.26/x
  3. Step 3: Cross multiply
    346.15x = 519.98 × 209.26
  4. Step 4: Simplify right side
    346.15x = 108,808.67
  5. Step 5: Solve for x
    x = 108,808.67/346.15
  6. Step 6: Final answer
    x = 314.34

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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.