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Finding the Fourth Proportional to 399.24, 597.94 and 318.13

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Solution

The fourth proportional to 399.24, 597.94 and 318.13 is: 476.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.24 : 597.94 = 318.13 : x
  2. Step 2: Convert to fraction form
    399.24/597.94 = 318.13/x
  3. Step 3: Cross multiply
    399.24x = 597.94 × 318.13
  4. Step 4: Simplify right side
    399.24x = 190,220.36
  5. Step 5: Solve for x
    x = 190,220.36/399.24
  6. Step 6: Final answer
    x = 476.46

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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.