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Finding the Fourth Proportional to 497.88, 746.94 and 189.72

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Solution

The fourth proportional to 497.88, 746.94 and 189.72 is: 284.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.88 : 746.94 = 189.72 : x
  2. Step 2: Convert to fraction form
    497.88/746.94 = 189.72/x
  3. Step 3: Cross multiply
    497.88x = 746.94 × 189.72
  4. Step 4: Simplify right side
    497.88x = 141,709.46
  5. Step 5: Solve for x
    x = 141,709.46/497.88
  6. Step 6: Final answer
    x = 284.63

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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.