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Finding the Fourth Proportional to 398.85, 597.24 and 276.93

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Solution

The fourth proportional to 398.85, 597.24 and 276.93 is: 414.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.85 : 597.24 = 276.93 : x
  2. Step 2: Convert to fraction form
    398.85/597.24 = 276.93/x
  3. Step 3: Cross multiply
    398.85x = 597.24 × 276.93
  4. Step 4: Simplify right side
    398.85x = 165,393.67
  5. Step 5: Solve for x
    x = 165,393.67/398.85
  6. Step 6: Final answer
    x = 414.68

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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.