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Finding the Fourth Proportional to 848.79, 1,266.43 and 744.90

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Solution

The fourth proportional to 848.79, 1,266.43 and 744.90 is: 1,111.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.79 : 1,266.43 = 744.90 : x
  2. Step 2: Convert to fraction form
    848.79/1,266.43 = 744.90/x
  3. Step 3: Cross multiply
    848.79x = 1,266.43 × 744.90
  4. Step 4: Simplify right side
    848.79x = 943,359.98
  5. Step 5: Solve for x
    x = 943,359.98/848.79
  6. Step 6: Final answer
    x = 1,111.42

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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.