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Finding the Fourth Proportional to 909.32, 1,255.38 and 606.73

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Solution

The fourth proportional to 909.32, 1,255.38 and 606.73 is: 837.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.32 : 1,255.38 = 606.73 : x
  2. Step 2: Convert to fraction form
    909.32/1,255.38 = 606.73/x
  3. Step 3: Cross multiply
    909.32x = 1,255.38 × 606.73
  4. Step 4: Simplify right side
    909.32x = 761,676.71
  5. Step 5: Solve for x
    x = 761,676.71/909.32
  6. Step 6: Final answer
    x = 837.63

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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.