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Finding the Fourth Proportional to 497.90, 746.85 and 383.09

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Solution

The fourth proportional to 497.90, 746.85 and 383.09 is: 574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.90 : 746.85 = 383.09 : x
  2. Step 2: Convert to fraction form
    497.90/746.85 = 383.09/x
  3. Step 3: Cross multiply
    497.90x = 746.85 × 383.09
  4. Step 4: Simplify right side
    497.90x = 286,107.03
  5. Step 5: Solve for x
    x = 286,107.03/497.90
  6. Step 6: Final answer
    x = 574.63

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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.