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Finding the Fourth Proportional to 606.52, 836.88 and 419.72

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Solution

The fourth proportional to 606.52, 836.88 and 419.72 is: 579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.52 : 836.88 = 419.72 : x
  2. Step 2: Convert to fraction form
    606.52/836.88 = 419.72/x
  3. Step 3: Cross multiply
    606.52x = 836.88 × 419.72
  4. Step 4: Simplify right side
    606.52x = 351,255.27
  5. Step 5: Solve for x
    x = 351,255.27/606.52
  6. Step 6: Final answer
    x = 579.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.