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Finding the Fourth Proportional to 511.35, 716.85 and 511.35

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Solution

The fourth proportional to 511.35, 716.85 and 511.35 is: 716.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.35 : 716.85 = 511.35 : x
  2. Step 2: Convert to fraction form
    511.35/716.85 = 511.35/x
  3. Step 3: Cross multiply
    511.35x = 716.85 × 511.35
  4. Step 4: Simplify right side
    511.35x = 366,561.25
  5. Step 5: Solve for x
    x = 366,561.25/511.35
  6. Step 6: Final answer
    x = 716.85

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.