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Finding the Fourth Proportional to 646.22, 969.33 and 454.70

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Solution

The fourth proportional to 646.22, 969.33 and 454.70 is: 682.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.22 : 969.33 = 454.70 : x
  2. Step 2: Convert to fraction form
    646.22/969.33 = 454.70/x
  3. Step 3: Cross multiply
    646.22x = 969.33 × 454.70
  4. Step 4: Simplify right side
    646.22x = 440,754.35
  5. Step 5: Solve for x
    x = 440,754.35/646.22
  6. Step 6: Final answer
    x = 682.05

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Similar ratio
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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.