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Finding the Fourth Proportional to 848.94, 1,273.79 and 540.71

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Solution

The fourth proportional to 848.94, 1,273.79 and 540.71 is: 811.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.94 : 1,273.79 = 540.71 : x
  2. Step 2: Convert to fraction form
    848.94/1,273.79 = 540.71/x
  3. Step 3: Cross multiply
    848.94x = 1,273.79 × 540.71
  4. Step 4: Simplify right side
    848.94x = 688,750.99
  5. Step 5: Solve for x
    x = 688,750.99/848.94
  6. Step 6: Final answer
    x = 811.31

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Why These Related Problems?

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