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Finding the Fourth Proportional to 968.64, 1,337.06 and 575.66

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Solution

The fourth proportional to 968.64, 1,337.06 and 575.66 is: 794.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.64 : 1,337.06 = 575.66 : x
  2. Step 2: Convert to fraction form
    968.64/1,337.06 = 575.66/x
  3. Step 3: Cross multiply
    968.64x = 1,337.06 × 575.66
  4. Step 4: Simplify right side
    968.64x = 769,688.62
  5. Step 5: Solve for x
    x = 769,688.62/968.64
  6. Step 6: Final answer
    x = 794.61

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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.