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Finding the Fourth Proportional to 968.76, 1,336.28 and 575.50

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Solution

The fourth proportional to 968.76, 1,336.28 and 575.50 is: 793.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.76 : 1,336.28 = 575.50 : x
  2. Step 2: Convert to fraction form
    968.76/1,336.28 = 575.50/x
  3. Step 3: Cross multiply
    968.76x = 1,336.28 × 575.50
  4. Step 4: Simplify right side
    968.76x = 769,029.14
  5. Step 5: Solve for x
    x = 769,029.14/968.76
  6. Step 6: Final answer
    x = 793.83

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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.