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Finding the Fourth Proportional to 575.72, 863.58 and 380.67

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Solution

The fourth proportional to 575.72, 863.58 and 380.67 is: 571.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.72 : 863.58 = 380.67 : x
  2. Step 2: Convert to fraction form
    575.72/863.58 = 380.67/x
  3. Step 3: Cross multiply
    575.72x = 863.58 × 380.67
  4. Step 4: Simplify right side
    575.72x = 328,743.14
  5. Step 5: Solve for x
    x = 328,743.14/575.72
  6. Step 6: Final answer
    x = 571.01

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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.