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Finding the Fourth Proportional to 968.21, 1,336.15 and 575.24

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Solution

The fourth proportional to 968.21, 1,336.15 and 575.24 is: 793.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.21 : 1,336.15 = 575.24 : x
  2. Step 2: Convert to fraction form
    968.21/1,336.15 = 575.24/x
  3. Step 3: Cross multiply
    968.21x = 1,336.15 × 575.24
  4. Step 4: Simplify right side
    968.21x = 768,600.96
  5. Step 5: Solve for x
    x = 768,600.96/968.21
  6. Step 6: Final answer
    x = 793.84

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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.