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Finding the Fourth Proportional to 606.20, 909.05 and 313.58

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Solution

The fourth proportional to 606.20, 909.05 and 313.58 is: 470.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.20 : 909.05 = 313.58 : x
  2. Step 2: Convert to fraction form
    606.20/909.05 = 313.58/x
  3. Step 3: Cross multiply
    606.20x = 909.05 × 313.58
  4. Step 4: Simplify right side
    606.20x = 285,053.79
  5. Step 5: Solve for x
    x = 285,053.79/606.20
  6. Step 6: Final answer
    x = 470.23

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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.