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Finding the Fourth Proportional to 527.23, 790.69 and 380.52

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Solution

The fourth proportional to 527.23, 790.69 and 380.52 is: 570.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.23 : 790.69 = 380.52 : x
  2. Step 2: Convert to fraction form
    527.23/790.69 = 380.52/x
  3. Step 3: Cross multiply
    527.23x = 790.69 × 380.52
  4. Step 4: Simplify right side
    527.23x = 300,874.27
  5. Step 5: Solve for x
    x = 300,874.27/527.23
  6. Step 6: Final answer
    x = 570.67

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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.