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Finding the Fourth Proportional to 2,231.65, 3,347.64 and 671.53

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Solution

The fourth proportional to 2,231.65, 3,347.64 and 671.53 is: 1,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.65 : 3,347.64 = 671.53 : x
  2. Step 2: Convert to fraction form
    2,231.65/3,347.64 = 671.53/x
  3. Step 3: Cross multiply
    2,231.65x = 3,347.64 × 671.53
  4. Step 4: Simplify right side
    2,231.65x = 2,248,040.69
  5. Step 5: Solve for x
    x = 2,248,040.69/2,231.65
  6. Step 6: Final answer
    x = 1,007.34

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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.