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Finding the Fourth Proportional to 517.13, 776.60 and 495.87

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Solution

The fourth proportional to 517.13, 776.60 and 495.87 is: 744.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.13 : 776.60 = 495.87 : x
  2. Step 2: Convert to fraction form
    517.13/776.60 = 495.87/x
  3. Step 3: Cross multiply
    517.13x = 776.60 × 495.87
  4. Step 4: Simplify right side
    517.13x = 385,092.64
  5. Step 5: Solve for x
    x = 385,092.64/517.13
  6. Step 6: Final answer
    x = 744.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.