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Finding the Fourth Proportional to 451.42, 673.31 and 437.75

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Solution

The fourth proportional to 451.42, 673.31 and 437.75 is: 652.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.42 : 673.31 = 437.75 : x
  2. Step 2: Convert to fraction form
    451.42/673.31 = 437.75/x
  3. Step 3: Cross multiply
    451.42x = 673.31 × 437.75
  4. Step 4: Simplify right side
    451.42x = 294,739.18
  5. Step 5: Solve for x
    x = 294,739.18/451.42
  6. Step 6: Final answer
    x = 652.92

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.