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Finding the Fourth Proportional to 673.26, 928.98 and 378.52

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Solution

The fourth proportional to 673.26, 928.98 and 378.52 is: 522.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.26 : 928.98 = 378.52 : x
  2. Step 2: Convert to fraction form
    673.26/928.98 = 378.52/x
  3. Step 3: Cross multiply
    673.26x = 928.98 × 378.52
  4. Step 4: Simplify right side
    673.26x = 351,637.51
  5. Step 5: Solve for x
    x = 351,637.51/673.26
  6. Step 6: Final answer
    x = 522.29

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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.