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Finding the Fourth Proportional to 841.12, 1,262.31 and 606.74

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Solution

The fourth proportional to 841.12, 1,262.31 and 606.74 is: 910.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.12 : 1,262.31 = 606.74 : x
  2. Step 2: Convert to fraction form
    841.12/1,262.31 = 606.74/x
  3. Step 3: Cross multiply
    841.12x = 1,262.31 × 606.74
  4. Step 4: Simplify right side
    841.12x = 765,893.97
  5. Step 5: Solve for x
    x = 765,893.97/841.12
  6. Step 6: Final answer
    x = 910.57

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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.