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Finding the Fourth Proportional to 606.91, 910.52 and 347.21

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Solution

The fourth proportional to 606.91, 910.52 and 347.21 is: 520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.91 : 910.52 = 347.21 : x
  2. Step 2: Convert to fraction form
    606.91/910.52 = 347.21/x
  3. Step 3: Cross multiply
    606.91x = 910.52 × 347.21
  4. Step 4: Simplify right side
    606.91x = 316,137.10
  5. Step 5: Solve for x
    x = 316,137.10/606.91
  6. Step 6: Final answer
    x = 520.90

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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.