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Finding the Fourth Proportional to 848.43, 1,266.53 and 724.50

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Solution

The fourth proportional to 848.43, 1,266.53 and 724.50 is: 1,081.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.43 : 1,266.53 = 724.50 : x
  2. Step 2: Convert to fraction form
    848.43/1,266.53 = 724.50/x
  3. Step 3: Cross multiply
    848.43x = 1,266.53 × 724.50
  4. Step 4: Simplify right side
    848.43x = 917,600.99
  5. Step 5: Solve for x
    x = 917,600.99/848.43
  6. Step 6: Final answer
    x = 1,081.53

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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.