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Finding the Fourth Proportional to 848.00, 1,272.38 and 539.77

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Solution

The fourth proportional to 848.00, 1,272.38 and 539.77 is: 809.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.00 : 1,272.38 = 539.77 : x
  2. Step 2: Convert to fraction form
    848.00/1,272.38 = 539.77/x
  3. Step 3: Cross multiply
    848.00x = 1,272.38 × 539.77
  4. Step 4: Simplify right side
    848.00x = 686,786.67
  5. Step 5: Solve for x
    x = 686,786.67/848.00
  6. Step 6: Final answer
    x = 809.89

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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.