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Finding the Fourth Proportional to 673.44, 928.53 and 555

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Solution

The fourth proportional to 673.44, 928.53 and 555 is: 765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.44 : 928.53 = 555 : x
  2. Step 2: Convert to fraction form
    673.44/928.53 = 555/x
  3. Step 3: Cross multiply
    673.44x = 928.53 × 555
  4. Step 4: Simplify right side
    673.44x = 515,334.15
  5. Step 5: Solve for x
    x = 515,334.15/673.44
  6. Step 6: Final answer
    x = 765.23

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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.