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Finding the Fourth Proportional to 440.81, 661.31 and 152.27

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Solution

The fourth proportional to 440.81, 661.31 and 152.27 is: 228.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.81 : 661.31 = 152.27 : x
  2. Step 2: Convert to fraction form
    440.81/661.31 = 152.27/x
  3. Step 3: Cross multiply
    440.81x = 661.31 × 152.27
  4. Step 4: Simplify right side
    440.81x = 100,693.61
  5. Step 5: Solve for x
    x = 100,693.61/440.81
  6. Step 6: Final answer
    x = 228.43

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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.