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Finding the Fourth Proportional to 837.61, 1,256.72 and 606.76

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Solution

The fourth proportional to 837.61, 1,256.72 and 606.76 is: 910.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.61 : 1,256.72 = 606.76 : x
  2. Step 2: Convert to fraction form
    837.61/1,256.72 = 606.76/x
  3. Step 3: Cross multiply
    837.61x = 1,256.72 × 606.76
  4. Step 4: Simplify right side
    837.61x = 762,521.25
  5. Step 5: Solve for x
    x = 762,521.25/837.61
  6. Step 6: Final answer
    x = 910.36

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1.5x scale

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.