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Finding the Fourth Proportional to 968.12, 1,336.16 and 575.08

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Solution

The fourth proportional to 968.12, 1,336.16 and 575.08 is: 793.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.12 : 1,336.16 = 575.08 : x
  2. Step 2: Convert to fraction form
    968.12/1,336.16 = 575.08/x
  3. Step 3: Cross multiply
    968.12x = 1,336.16 × 575.08
  4. Step 4: Simplify right side
    968.12x = 768,398.89
  5. Step 5: Solve for x
    x = 768,398.89/968.12
  6. Step 6: Final answer
    x = 793.70

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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.