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Finding the Fourth Proportional to 1,474.72, 2,212.48 and 608.83

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Solution

The fourth proportional to 1,474.72, 2,212.48 and 608.83 is: 913.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.72 : 2,212.48 = 608.83 : x
  2. Step 2: Convert to fraction form
    1,474.72/2,212.48 = 608.83/x
  3. Step 3: Cross multiply
    1,474.72x = 2,212.48 × 608.83
  4. Step 4: Simplify right side
    1,474.72x = 1,347,024.20
  5. Step 5: Solve for x
    x = 1,347,024.20/1,474.72
  6. Step 6: Final answer
    x = 913.41

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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.