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Finding the Fourth Proportional to 481.73, 661.90 and 383.32

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Solution

The fourth proportional to 481.73, 661.90 and 383.32 is: 526.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.73 : 661.90 = 383.32 : x
  2. Step 2: Convert to fraction form
    481.73/661.90 = 383.32/x
  3. Step 3: Cross multiply
    481.73x = 661.90 × 383.32
  4. Step 4: Simplify right side
    481.73x = 253,719.51
  5. Step 5: Solve for x
    x = 253,719.51/481.73
  6. Step 6: Final answer
    x = 526.68

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.