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Finding the Fourth Proportional to 497.51, 746.34 and 172.86

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Solution

The fourth proportional to 497.51, 746.34 and 172.86 is: 259.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.51 : 746.34 = 172.86 : x
  2. Step 2: Convert to fraction form
    497.51/746.34 = 172.86/x
  3. Step 3: Cross multiply
    497.51x = 746.34 × 172.86
  4. Step 4: Simplify right side
    497.51x = 129,012.33
  5. Step 5: Solve for x
    x = 129,012.33/497.51
  6. Step 6: Final answer
    x = 259.32

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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.