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Finding the Fourth Proportional to 606.90, 837.66 and 385.68

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Solution

The fourth proportional to 606.90, 837.66 and 385.68 is: 532.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.90 : 837.66 = 385.68 : x
  2. Step 2: Convert to fraction form
    606.90/837.66 = 385.68/x
  3. Step 3: Cross multiply
    606.90x = 837.66 × 385.68
  4. Step 4: Simplify right side
    606.90x = 323,068.71
  5. Step 5: Solve for x
    x = 323,068.71/606.90
  6. Step 6: Final answer
    x = 532.33

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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.