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Finding the Fourth Proportional to 497.46, 745.55 and 314.79

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Solution

The fourth proportional to 497.46, 745.55 and 314.79 is: 471.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.46 : 745.55 = 314.79 : x
  2. Step 2: Convert to fraction form
    497.46/745.55 = 314.79/x
  3. Step 3: Cross multiply
    497.46x = 745.55 × 314.79
  4. Step 4: Simplify right side
    497.46x = 234,690.11
  5. Step 5: Solve for x
    x = 234,690.11/497.46
  6. Step 6: Final answer
    x = 471.78

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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.