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Finding the Fourth Proportional to 617.43, 852.09 and 440.73

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Solution

The fourth proportional to 617.43, 852.09 and 440.73 is: 608.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.43 : 852.09 = 440.73 : x
  2. Step 2: Convert to fraction form
    617.43/852.09 = 440.73/x
  3. Step 3: Cross multiply
    617.43x = 852.09 × 440.73
  4. Step 4: Simplify right side
    617.43x = 375,541.63
  5. Step 5: Solve for x
    x = 375,541.63/617.43
  6. Step 6: Final answer
    x = 608.23

Related Problems

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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.