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Finding the Fourth Proportional to 380.13, 570.35 and 174.79

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Solution

The fourth proportional to 380.13, 570.35 and 174.79 is: 262.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.13 : 570.35 = 174.79 : x
  2. Step 2: Convert to fraction form
    380.13/570.35 = 174.79/x
  3. Step 3: Cross multiply
    380.13x = 570.35 × 174.79
  4. Step 4: Simplify right side
    380.13x = 99,691.48
  5. Step 5: Solve for x
    x = 99,691.48/380.13
  6. Step 6: Final answer
    x = 262.26

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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.