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Finding the Fourth Proportional to 835.51, 1,152.91 and 481.42

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Solution

The fourth proportional to 835.51, 1,152.91 and 481.42 is: 664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.51 : 1,152.91 = 481.42 : x
  2. Step 2: Convert to fraction form
    835.51/1,152.91 = 481.42/x
  3. Step 3: Cross multiply
    835.51x = 1,152.91 × 481.42
  4. Step 4: Simplify right side
    835.51x = 555,039.04
  5. Step 5: Solve for x
    x = 555,039.04/835.51
  6. Step 6: Final answer
    x = 664.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.