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Finding the Fourth Proportional to 1,245.17, 1,866.43 and 464.67

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Solution

The fourth proportional to 1,245.17, 1,866.43 and 464.67 is: 696.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.17 : 1,866.43 = 464.67 : x
  2. Step 2: Convert to fraction form
    1,245.17/1,866.43 = 464.67/x
  3. Step 3: Cross multiply
    1,245.17x = 1,866.43 × 464.67
  4. Step 4: Simplify right side
    1,245.17x = 867,272.87
  5. Step 5: Solve for x
    x = 867,272.87/1,245.17
  6. Step 6: Final answer
    x = 696.51

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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.