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Finding the Fourth Proportional to 606.89, 910.79 and 424.19

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Solution

The fourth proportional to 606.89, 910.79 and 424.19 is: 636.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.89 : 910.79 = 424.19 : x
  2. Step 2: Convert to fraction form
    606.89/910.79 = 424.19/x
  3. Step 3: Cross multiply
    606.89x = 910.79 × 424.19
  4. Step 4: Simplify right side
    606.89x = 386,347.02
  5. Step 5: Solve for x
    x = 386,347.02/606.89
  6. Step 6: Final answer
    x = 636.60

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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.