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Finding the Fourth Proportional to 1,970.77, 2,954.33 and 671.33

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Solution

The fourth proportional to 1,970.77, 2,954.33 and 671.33 is: 1,006.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.77 : 2,954.33 = 671.33 : x
  2. Step 2: Convert to fraction form
    1,970.77/2,954.33 = 671.33/x
  3. Step 3: Cross multiply
    1,970.77x = 2,954.33 × 671.33
  4. Step 4: Simplify right side
    1,970.77x = 1,983,330.36
  5. Step 5: Solve for x
    x = 1,983,330.36/1,970.77
  6. Step 6: Final answer
    x = 1,006.37

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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.