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Finding the Fourth Proportional to 399.96, 599.06 and 291.50

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Solution

The fourth proportional to 399.96, 599.06 and 291.50 is: 436.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.96 : 599.06 = 291.50 : x
  2. Step 2: Convert to fraction form
    399.96/599.06 = 291.50/x
  3. Step 3: Cross multiply
    399.96x = 599.06 × 291.50
  4. Step 4: Simplify right side
    399.96x = 174,625.99
  5. Step 5: Solve for x
    x = 174,625.99/399.96
  6. Step 6: Final answer
    x = 436.61

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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.