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Finding the Fourth Proportional to 380.29, 570.72 and 164.02

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Solution

The fourth proportional to 380.29, 570.72 and 164.02 is: 246.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.29 : 570.72 = 164.02 : x
  2. Step 2: Convert to fraction form
    380.29/570.72 = 164.02/x
  3. Step 3: Cross multiply
    380.29x = 570.72 × 164.02
  4. Step 4: Simplify right side
    380.29x = 93,609.49
  5. Step 5: Solve for x
    x = 93,609.49/380.29
  6. Step 6: Final answer
    x = 246.15

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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.