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Finding the Fourth Proportional to 497.33, 745.38 and 172.31

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Solution

The fourth proportional to 497.33, 745.38 and 172.31 is: 258.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.33 : 745.38 = 172.31 : x
  2. Step 2: Convert to fraction form
    497.33/745.38 = 172.31/x
  3. Step 3: Cross multiply
    497.33x = 745.38 × 172.31
  4. Step 4: Simplify right side
    497.33x = 128,432.70
  5. Step 5: Solve for x
    x = 128,432.70/497.33
  6. Step 6: Final answer
    x = 258.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.