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Finding the Fourth Proportional to 440.77, 661.45 and 235.49

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Solution

The fourth proportional to 440.77, 661.45 and 235.49 is: 353.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.77 : 661.45 = 235.49 : x
  2. Step 2: Convert to fraction form
    440.77/661.45 = 235.49/x
  3. Step 3: Cross multiply
    440.77x = 661.45 × 235.49
  4. Step 4: Simplify right side
    440.77x = 155,762.14
  5. Step 5: Solve for x
    x = 155,762.14/440.77
  6. Step 6: Final answer
    x = 353.39

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Double scale
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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.