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Finding the Fourth Proportional to 647.60, 894.12 and 481.88

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Solution

The fourth proportional to 647.60, 894.12 and 481.88 is: 665.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.60 : 894.12 = 481.88 : x
  2. Step 2: Convert to fraction form
    647.60/894.12 = 481.88/x
  3. Step 3: Cross multiply
    647.60x = 894.12 × 481.88
  4. Step 4: Simplify right side
    647.60x = 430,858.55
  5. Step 5: Solve for x
    x = 430,858.55/647.60
  6. Step 6: Final answer
    x = 665.32

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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.