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Finding the Fourth Proportional to 848.22, 1,271.52 and 327.84

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Solution

The fourth proportional to 848.22, 1,271.52 and 327.84 is: 491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.22 : 1,271.52 = 327.84 : x
  2. Step 2: Convert to fraction form
    848.22/1,271.52 = 327.84/x
  3. Step 3: Cross multiply
    848.22x = 1,271.52 × 327.84
  4. Step 4: Simplify right side
    848.22x = 416,855.12
  5. Step 5: Solve for x
    x = 416,855.12/848.22
  6. Step 6: Final answer
    x = 491.45

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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.