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Finding the Fourth Proportional to 606.60, 909.21 and 346.41

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Solution

The fourth proportional to 606.60, 909.21 and 346.41 is: 519.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.60 : 909.21 = 346.41 : x
  2. Step 2: Convert to fraction form
    606.60/909.21 = 346.41/x
  3. Step 3: Cross multiply
    606.60x = 909.21 × 346.41
  4. Step 4: Simplify right side
    606.60x = 314,959.44
  5. Step 5: Solve for x
    x = 314,959.44/606.60
  6. Step 6: Final answer
    x = 519.22

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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.