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Finding the Fourth Proportional to 1,746.28, 2,620.50 and 651.43

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Solution

The fourth proportional to 1,746.28, 2,620.50 and 651.43 is: 977.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,746.28 : 2,620.50 = 651.43 : x
  2. Step 2: Convert to fraction form
    1,746.28/2,620.50 = 651.43/x
  3. Step 3: Cross multiply
    1,746.28x = 2,620.50 × 651.43
  4. Step 4: Simplify right side
    1,746.28x = 1,707,072.32
  5. Step 5: Solve for x
    x = 1,707,072.32/1,746.28
  6. Step 6: Final answer
    x = 977.55

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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.