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Finding the Fourth Proportional to 606.77, 837.90 and 394.45

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Solution

The fourth proportional to 606.77, 837.90 and 394.45 is: 544.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.77 : 837.90 = 394.45 : x
  2. Step 2: Convert to fraction form
    606.77/837.90 = 394.45/x
  3. Step 3: Cross multiply
    606.77x = 837.90 × 394.45
  4. Step 4: Simplify right side
    606.77x = 330,505.47
  5. Step 5: Solve for x
    x = 330,505.47/606.77
  6. Step 6: Final answer
    x = 544.70

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Find fourth proportional to 303.38, 418.95 and 197.22
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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.