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Finding the Fourth Proportional to 703.44, 968.28 and 620.76

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Solution

The fourth proportional to 703.44, 968.28 and 620.76 is: 854.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.44 : 968.28 = 620.76 : x
  2. Step 2: Convert to fraction form
    703.44/968.28 = 620.76/x
  3. Step 3: Cross multiply
    703.44x = 968.28 × 620.76
  4. Step 4: Simplify right side
    703.44x = 601,069.49
  5. Step 5: Solve for x
    x = 601,069.49/703.44
  6. Step 6: Final answer
    x = 854.47

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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.