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Finding the Fourth Proportional to 383.90, 575.81 and 164.45

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Solution

The fourth proportional to 383.90, 575.81 and 164.45 is: 246.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.90 : 575.81 = 164.45 : x
  2. Step 2: Convert to fraction form
    383.90/575.81 = 164.45/x
  3. Step 3: Cross multiply
    383.90x = 575.81 × 164.45
  4. Step 4: Simplify right side
    383.90x = 94,693.19
  5. Step 5: Solve for x
    x = 94,693.19/383.90
  6. Step 6: Final answer
    x = 246.66

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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.