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Finding the Fourth Proportional to 497.78, 746.10 and 208.88

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Solution

The fourth proportional to 497.78, 746.10 and 208.88 is: 313.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.78 : 746.10 = 208.88 : x
  2. Step 2: Convert to fraction form
    497.78/746.10 = 208.88/x
  3. Step 3: Cross multiply
    497.78x = 746.10 × 208.88
  4. Step 4: Simplify right side
    497.78x = 155,845.37
  5. Step 5: Solve for x
    x = 155,845.37/497.78
  6. Step 6: Final answer
    x = 313.08

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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.