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Finding the Fourth Proportional to 627.62, 865.77 and 441.40

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Solution

The fourth proportional to 627.62, 865.77 and 441.40 is: 608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.62 : 865.77 = 441.40 : x
  2. Step 2: Convert to fraction form
    627.62/865.77 = 441.40/x
  3. Step 3: Cross multiply
    627.62x = 865.77 × 441.40
  4. Step 4: Simplify right side
    627.62x = 382,150.88
  5. Step 5: Solve for x
    x = 382,150.88/627.62
  6. Step 6: Final answer
    x = 608.89

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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.