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Finding the Fourth Proportional to 595.44, 820.91 and 408.86

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Solution

The fourth proportional to 595.44, 820.91 and 408.86 is: 563.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.44 : 820.91 = 408.86 : x
  2. Step 2: Convert to fraction form
    595.44/820.91 = 408.86/x
  3. Step 3: Cross multiply
    595.44x = 820.91 × 408.86
  4. Step 4: Simplify right side
    595.44x = 335,631.11
  5. Step 5: Solve for x
    x = 335,631.11/595.44
  6. Step 6: Final answer
    x = 563.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.