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Finding the Fourth Proportional to 1,300.20, 1,947.78 and 651.48

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Solution

The fourth proportional to 1,300.20, 1,947.78 and 651.48 is: 975.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300.20 : 1,947.78 = 651.48 : x
  2. Step 2: Convert to fraction form
    1,300.20/1,947.78 = 651.48/x
  3. Step 3: Cross multiply
    1,300.20x = 1,947.78 × 651.48
  4. Step 4: Simplify right side
    1,300.20x = 1,268,939.71
  5. Step 5: Solve for x
    x = 1,268,939.71/1,300.20
  6. Step 6: Final answer
    x = 975.96

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.