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Finding the Fourth Proportional to 497.07, 685.95 and 276.02

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Solution

The fourth proportional to 497.07, 685.95 and 276.02 is: 380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.07 : 685.95 = 276.02 : x
  2. Step 2: Convert to fraction form
    497.07/685.95 = 276.02/x
  3. Step 3: Cross multiply
    497.07x = 685.95 × 276.02
  4. Step 4: Simplify right side
    497.07x = 189,335.92
  5. Step 5: Solve for x
    x = 189,335.92/497.07
  6. Step 6: Final answer
    x = 380.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.