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Finding the Fourth Proportional to 673.82, 930.26 and 425.35

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Solution

The fourth proportional to 673.82, 930.26 and 425.35 is: 587.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.82 : 930.26 = 425.35 : x
  2. Step 2: Convert to fraction form
    673.82/930.26 = 425.35/x
  3. Step 3: Cross multiply
    673.82x = 930.26 × 425.35
  4. Step 4: Simplify right side
    673.82x = 395,679.31
  5. Step 5: Solve for x
    x = 395,679.31/673.82
  6. Step 6: Final answer
    x = 587.22

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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.