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Finding the Fourth Proportional to 400.01, 599.64 and 253.31

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Solution

The fourth proportional to 400.01, 599.64 and 253.31 is: 379.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.01 : 599.64 = 253.31 : x
  2. Step 2: Convert to fraction form
    400.01/599.64 = 253.31/x
  3. Step 3: Cross multiply
    400.01x = 599.64 × 253.31
  4. Step 4: Simplify right side
    400.01x = 151,898.05
  5. Step 5: Solve for x
    x = 151,898.05/400.01
  6. Step 6: Final answer
    x = 379.74

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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.