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Finding the Fourth Proportional to 520.37, 717.11 and 372.74

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Solution

The fourth proportional to 520.37, 717.11 and 372.74 is: 513.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.37 : 717.11 = 372.74 : x
  2. Step 2: Convert to fraction form
    520.37/717.11 = 372.74/x
  3. Step 3: Cross multiply
    520.37x = 717.11 × 372.74
  4. Step 4: Simplify right side
    520.37x = 267,298.31
  5. Step 5: Solve for x
    x = 267,298.31/520.37
  6. Step 6: Final answer
    x = 513.67

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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.