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Finding the Fourth Proportional to 968.25, 1,451.06 and 440.50

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Solution

The fourth proportional to 968.25, 1,451.06 and 440.50 is: 660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.25 : 1,451.06 = 440.50 : x
  2. Step 2: Convert to fraction form
    968.25/1,451.06 = 440.50/x
  3. Step 3: Cross multiply
    968.25x = 1,451.06 × 440.50
  4. Step 4: Simplify right side
    968.25x = 639,191.93
  5. Step 5: Solve for x
    x = 639,191.93/968.25
  6. Step 6: Final answer
    x = 660.15

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.