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Finding the Fourth Proportional to 968.60, 1,337.05 and 674.03

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Solution

The fourth proportional to 968.60, 1,337.05 and 674.03 is: 930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.60 : 1,337.05 = 674.03 : x
  2. Step 2: Convert to fraction form
    968.60/1,337.05 = 674.03/x
  3. Step 3: Cross multiply
    968.60x = 1,337.05 × 674.03
  4. Step 4: Simplify right side
    968.60x = 901,211.81
  5. Step 5: Solve for x
    x = 901,211.81/968.60
  6. Step 6: Final answer
    x = 930.43

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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.