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Finding the Fourth Proportional to 519.51, 774.45 and 480.63

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Solution

The fourth proportional to 519.51, 774.45 and 480.63 is: 716.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.51 : 774.45 = 480.63 : x
  2. Step 2: Convert to fraction form
    519.51/774.45 = 480.63/x
  3. Step 3: Cross multiply
    519.51x = 774.45 × 480.63
  4. Step 4: Simplify right side
    519.51x = 372,223.90
  5. Step 5: Solve for x
    x = 372,223.90/519.51
  6. Step 6: Final answer
    x = 716.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.