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Finding the Fourth Proportional to 499.30, 748.59 and 210.94

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Solution

The fourth proportional to 499.30, 748.59 and 210.94 is: 316.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.30 : 748.59 = 210.94 : x
  2. Step 2: Convert to fraction form
    499.30/748.59 = 210.94/x
  3. Step 3: Cross multiply
    499.30x = 748.59 × 210.94
  4. Step 4: Simplify right side
    499.30x = 157,907.57
  5. Step 5: Solve for x
    x = 157,907.57/499.30
  6. Step 6: Final answer
    x = 316.26

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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.