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Finding the Fourth Proportional to 886.51, 1,329.80 and 574.86

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Solution

The fourth proportional to 886.51, 1,329.80 and 574.86 is: 862.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.51 : 1,329.80 = 574.86 : x
  2. Step 2: Convert to fraction form
    886.51/1,329.80 = 574.86/x
  3. Step 3: Cross multiply
    886.51x = 1,329.80 × 574.86
  4. Step 4: Simplify right side
    886.51x = 764,454.17
  5. Step 5: Solve for x
    x = 764,454.17/886.51
  6. Step 6: Final answer
    x = 862.32

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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.