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Finding the Fourth Proportional to 837.57, 1,154.81 and 679.62

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Solution

The fourth proportional to 837.57, 1,154.81 and 679.62 is: 937.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.57 : 1,154.81 = 679.62 : x
  2. Step 2: Convert to fraction form
    837.57/1,154.81 = 679.62/x
  3. Step 3: Cross multiply
    837.57x = 1,154.81 × 679.62
  4. Step 4: Simplify right side
    837.57x = 784,828.57
  5. Step 5: Solve for x
    x = 784,828.57/837.57
  6. Step 6: Final answer
    x = 937.03

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1.5x scale

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.