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Finding the Fourth Proportional to 968.75, 1,336.30 and 575.75

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Solution

The fourth proportional to 968.75, 1,336.30 and 575.75 is: 794.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.75 : 1,336.30 = 575.75 : x
  2. Step 2: Convert to fraction form
    968.75/1,336.30 = 575.75/x
  3. Step 3: Cross multiply
    968.75x = 1,336.30 × 575.75
  4. Step 4: Simplify right side
    968.75x = 769,374.73
  5. Step 5: Solve for x
    x = 769,374.73/968.75
  6. Step 6: Final answer
    x = 794.19

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Half scale
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Double scale
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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.