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Finding the Fourth Proportional to 399.60, 597.87 and 262.98

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Solution

The fourth proportional to 399.60, 597.87 and 262.98 is: 393.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.60 : 597.87 = 262.98 : x
  2. Step 2: Convert to fraction form
    399.60/597.87 = 262.98/x
  3. Step 3: Cross multiply
    399.60x = 597.87 × 262.98
  4. Step 4: Simplify right side
    399.60x = 157,227.85
  5. Step 5: Solve for x
    x = 157,227.85/399.60
  6. Step 6: Final answer
    x = 393.46

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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.