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Finding the Fourth Proportional to 1,691.69, 2,537.46 and 651.51

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Solution

The fourth proportional to 1,691.69, 2,537.46 and 651.51 is: 977.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.69 : 2,537.46 = 651.51 : x
  2. Step 2: Convert to fraction form
    1,691.69/2,537.46 = 651.51/x
  3. Step 3: Cross multiply
    1,691.69x = 2,537.46 × 651.51
  4. Step 4: Simplify right side
    1,691.69x = 1,653,180.56
  5. Step 5: Solve for x
    x = 1,653,180.56/1,691.69
  6. Step 6: Final answer
    x = 977.24

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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.