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Finding the Fourth Proportional to 606.94, 910.40 and 424.69

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Solution

The fourth proportional to 606.94, 910.40 and 424.69 is: 637.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.94 : 910.40 = 424.69 : x
  2. Step 2: Convert to fraction form
    606.94/910.40 = 424.69/x
  3. Step 3: Cross multiply
    606.94x = 910.40 × 424.69
  4. Step 4: Simplify right side
    606.94x = 386,637.78
  5. Step 5: Solve for x
    x = 386,637.78/606.94
  6. Step 6: Final answer
    x = 637.03

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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.