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Finding the Fourth Proportional to 520.59, 713.76 and 511.41

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Solution

The fourth proportional to 520.59, 713.76 and 511.41 is: 701.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.59 : 713.76 = 511.41 : x
  2. Step 2: Convert to fraction form
    520.59/713.76 = 511.41/x
  3. Step 3: Cross multiply
    520.59x = 713.76 × 511.41
  4. Step 4: Simplify right side
    520.59x = 365,021.44
  5. Step 5: Solve for x
    x = 365,021.44/520.59
  6. Step 6: Final answer
    x = 701.17

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.