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Finding the Fourth Proportional to 887.00, 1,329.75 and 539.91

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Solution

The fourth proportional to 887.00, 1,329.75 and 539.91 is: 809.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.00 : 1,329.75 = 539.91 : x
  2. Step 2: Convert to fraction form
    887.00/1,329.75 = 539.91/x
  3. Step 3: Cross multiply
    887.00x = 1,329.75 × 539.91
  4. Step 4: Simplify right side
    887.00x = 717,945.32
  5. Step 5: Solve for x
    x = 717,945.32/887.00
  6. Step 6: Final answer
    x = 809.41

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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.