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Finding the Fourth Proportional to 513.36, 710.24 and 493.11

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Solution

The fourth proportional to 513.36, 710.24 and 493.11 is: 682.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.36 : 710.24 = 493.11 : x
  2. Step 2: Convert to fraction form
    513.36/710.24 = 493.11/x
  3. Step 3: Cross multiply
    513.36x = 710.24 × 493.11
  4. Step 4: Simplify right side
    513.36x = 350,223.98
  5. Step 5: Solve for x
    x = 350,223.98/513.36
  6. Step 6: Final answer
    x = 682.22

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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.