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Finding the Fourth Proportional to 1,745.22, 2,618.28 and 512.67

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Solution

The fourth proportional to 1,745.22, 2,618.28 and 512.67 is: 769.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.22 : 2,618.28 = 512.67 : x
  2. Step 2: Convert to fraction form
    1,745.22/2,618.28 = 512.67/x
  3. Step 3: Cross multiply
    1,745.22x = 2,618.28 × 512.67
  4. Step 4: Simplify right side
    1,745.22x = 1,342,313.61
  5. Step 5: Solve for x
    x = 1,342,313.61/1,745.22
  6. Step 6: Final answer
    x = 769.14

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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.