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Finding the Fourth Proportional to 486.51, 730.33 and 399.99

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Solution

The fourth proportional to 486.51, 730.33 and 399.99 is: 600.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.51 : 730.33 = 399.99 : x
  2. Step 2: Convert to fraction form
    486.51/730.33 = 399.99/x
  3. Step 3: Cross multiply
    486.51x = 730.33 × 399.99
  4. Step 4: Simplify right side
    486.51x = 292,126.44
  5. Step 5: Solve for x
    x = 292,126.44/486.51
  6. Step 6: Final answer
    x = 600.45

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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.