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Finding the Fourth Proportional to 451.35, 672.37 and 437.75

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Solution

The fourth proportional to 451.35, 672.37 and 437.75 is: 652.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.35 : 672.37 = 437.75 : x
  2. Step 2: Convert to fraction form
    451.35/672.37 = 437.75/x
  3. Step 3: Cross multiply
    451.35x = 672.37 × 437.75
  4. Step 4: Simplify right side
    451.35x = 294,327.78
  5. Step 5: Solve for x
    x = 294,327.78/451.35
  6. Step 6: Final answer
    x = 652.11

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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.