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Finding the Fourth Proportional to 482.02, 664.56 and 307.30

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Solution

The fourth proportional to 482.02, 664.56 and 307.30 is: 423.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.02 : 664.56 = 307.30 : x
  2. Step 2: Convert to fraction form
    482.02/664.56 = 307.30/x
  3. Step 3: Cross multiply
    482.02x = 664.56 × 307.30
  4. Step 4: Simplify right side
    482.02x = 204,219.29
  5. Step 5: Solve for x
    x = 204,219.29/482.02
  6. Step 6: Final answer
    x = 423.67

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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.