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Finding the Fourth Proportional to 887.25, 1,330.59 and 543

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Solution

The fourth proportional to 887.25, 1,330.59 and 543 is: 814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.25 : 1,330.59 = 543 : x
  2. Step 2: Convert to fraction form
    887.25/1,330.59 = 543/x
  3. Step 3: Cross multiply
    887.25x = 1,330.59 × 543
  4. Step 4: Simplify right side
    887.25x = 722,510.37
  5. Step 5: Solve for x
    x = 722,510.37/887.25
  6. Step 6: Final answer
    x = 814.33

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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.