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Finding the Fourth Proportional to 360.02, 540.15 and 213.74

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Solution

The fourth proportional to 360.02, 540.15 and 213.74 is: 320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.02 : 540.15 = 213.74 : x
  2. Step 2: Convert to fraction form
    360.02/540.15 = 213.74/x
  3. Step 3: Cross multiply
    360.02x = 540.15 × 213.74
  4. Step 4: Simplify right side
    360.02x = 115,450.18
  5. Step 5: Solve for x
    x = 115,450.18/360.02
  6. Step 6: Final answer
    x = 320.67

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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.