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Finding the Fourth Proportional to 514.72, 772.28 and 360.28

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Solution

The fourth proportional to 514.72, 772.28 and 360.28 is: 540.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.72 : 772.28 = 360.28 : x
  2. Step 2: Convert to fraction form
    514.72/772.28 = 360.28/x
  3. Step 3: Cross multiply
    514.72x = 772.28 × 360.28
  4. Step 4: Simplify right side
    514.72x = 278,237.04
  5. Step 5: Solve for x
    x = 278,237.04/514.72
  6. Step 6: Final answer
    x = 540.56

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Double scale
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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.