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Finding the Fourth Proportional to 887.06, 1,329.24 and 561.44

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Solution

The fourth proportional to 887.06, 1,329.24 and 561.44 is: 841.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.06 : 1,329.24 = 561.44 : x
  2. Step 2: Convert to fraction form
    887.06/1,329.24 = 561.44/x
  3. Step 3: Cross multiply
    887.06x = 1,329.24 × 561.44
  4. Step 4: Simplify right side
    887.06x = 746,288.51
  5. Step 5: Solve for x
    x = 746,288.51/887.06
  6. Step 6: Final answer
    x = 841.31

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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.