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Finding the Fourth Proportional to 519.55, 776.28 and 501.39

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Solution

The fourth proportional to 519.55, 776.28 and 501.39 is: 749.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.55 : 776.28 = 501.39 : x
  2. Step 2: Convert to fraction form
    519.55/776.28 = 501.39/x
  3. Step 3: Cross multiply
    519.55x = 776.28 × 501.39
  4. Step 4: Simplify right side
    519.55x = 389,216.87
  5. Step 5: Solve for x
    x = 389,216.87/519.55
  6. Step 6: Final answer
    x = 749.15

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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.