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Finding the Fourth Proportional to 968.05, 1,336.29 and 653.50

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Solution

The fourth proportional to 968.05, 1,336.29 and 653.50 is: 902.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.05 : 1,336.29 = 653.50 : x
  2. Step 2: Convert to fraction form
    968.05/1,336.29 = 653.50/x
  3. Step 3: Cross multiply
    968.05x = 1,336.29 × 653.50
  4. Step 4: Simplify right side
    968.05x = 873,265.52
  5. Step 5: Solve for x
    x = 873,265.52/968.05
  6. Step 6: Final answer
    x = 902.09

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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.