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Finding the Fourth Proportional to 1,048.94, 1,447.27 and 676.47

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Solution

The fourth proportional to 1,048.94, 1,447.27 and 676.47 is: 933.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.94 : 1,447.27 = 676.47 : x
  2. Step 2: Convert to fraction form
    1,048.94/1,447.27 = 676.47/x
  3. Step 3: Cross multiply
    1,048.94x = 1,447.27 × 676.47
  4. Step 4: Simplify right side
    1,048.94x = 979,033.05
  5. Step 5: Solve for x
    x = 979,033.05/1,048.94
  6. Step 6: Final answer
    x = 933.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.