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Finding the Fourth Proportional to 497.89, 746.12 and 389.55

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Solution

The fourth proportional to 497.89, 746.12 and 389.55 is: 583.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.89 : 746.12 = 389.55 : x
  2. Step 2: Convert to fraction form
    497.89/746.12 = 389.55/x
  3. Step 3: Cross multiply
    497.89x = 746.12 × 389.55
  4. Step 4: Simplify right side
    497.89x = 290,652.02
  5. Step 5: Solve for x
    x = 290,652.02/497.89
  6. Step 6: Final answer
    x = 583.77

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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.