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Finding the Fourth Proportional to 848.44, 1,266.89 and 748.78

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Solution

The fourth proportional to 848.44, 1,266.89 and 748.78 is: 1,118.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.44 : 1,266.89 = 748.78 : x
  2. Step 2: Convert to fraction form
    848.44/1,266.89 = 748.78/x
  3. Step 3: Cross multiply
    848.44x = 1,266.89 × 748.78
  4. Step 4: Simplify right side
    848.44x = 948,621.32
  5. Step 5: Solve for x
    x = 948,621.32/848.44
  6. Step 6: Final answer
    x = 1,118.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.