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Finding the Fourth Proportional to 513.46, 770.22 and 239.51

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Solution

The fourth proportional to 513.46, 770.22 and 239.51 is: 359.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.46 : 770.22 = 239.51 : x
  2. Step 2: Convert to fraction form
    513.46/770.22 = 239.51/x
  3. Step 3: Cross multiply
    513.46x = 770.22 × 239.51
  4. Step 4: Simplify right side
    513.46x = 184,475.39
  5. Step 5: Solve for x
    x = 184,475.39/513.46
  6. Step 6: Final answer
    x = 359.28

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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.