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Finding the Fourth Proportional to 482.19, 665.16 and 304.83

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Solution

The fourth proportional to 482.19, 665.16 and 304.83 is: 420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.19 : 665.16 = 304.83 : x
  2. Step 2: Convert to fraction form
    482.19/665.16 = 304.83/x
  3. Step 3: Cross multiply
    482.19x = 665.16 × 304.83
  4. Step 4: Simplify right side
    482.19x = 202,760.72
  5. Step 5: Solve for x
    x = 202,760.72/482.19
  6. Step 6: Final answer
    x = 420.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.