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Finding the Fourth Proportional to 440.06, 663.95 and 436.41

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Solution

The fourth proportional to 440.06, 663.95 and 436.41 is: 658.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.06 : 663.95 = 436.41 : x
  2. Step 2: Convert to fraction form
    440.06/663.95 = 436.41/x
  3. Step 3: Cross multiply
    440.06x = 663.95 × 436.41
  4. Step 4: Simplify right side
    440.06x = 289,755.51
  5. Step 5: Solve for x
    x = 289,755.51/440.06
  6. Step 6: Final answer
    x = 658.45

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.