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Finding the Fourth Proportional to 886.60, 1,329.96 and 561.52

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Solution

The fourth proportional to 886.60, 1,329.96 and 561.52 is: 842.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.60 : 1,329.96 = 561.52 : x
  2. Step 2: Convert to fraction form
    886.60/1,329.96 = 561.52/x
  3. Step 3: Cross multiply
    886.60x = 1,329.96 × 561.52
  4. Step 4: Simplify right side
    886.60x = 746,799.14
  5. Step 5: Solve for x
    x = 746,799.14/886.60
  6. Step 6: Final answer
    x = 842.32

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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.