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Finding the Fourth Proportional to 514.16, 771.38 and 148.97

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Solution

The fourth proportional to 514.16, 771.38 and 148.97 is: 223.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.16 : 771.38 = 148.97 : x
  2. Step 2: Convert to fraction form
    514.16/771.38 = 148.97/x
  3. Step 3: Cross multiply
    514.16x = 771.38 × 148.97
  4. Step 4: Simplify right side
    514.16x = 114,911.73
  5. Step 5: Solve for x
    x = 114,911.73/514.16
  6. Step 6: Final answer
    x = 223.49

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1.5x scale

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.