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Finding the Fourth Proportional to 517.36, 774.45 and 300.28

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Solution

The fourth proportional to 517.36, 774.45 and 300.28 is: 449.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.36 : 774.45 = 300.28 : x
  2. Step 2: Convert to fraction form
    517.36/774.45 = 300.28/x
  3. Step 3: Cross multiply
    517.36x = 774.45 × 300.28
  4. Step 4: Simplify right side
    517.36x = 232,551.85
  5. Step 5: Solve for x
    x = 232,551.85/517.36
  6. Step 6: Final answer
    x = 449.50

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1.5x scale

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.