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Finding the Fourth Proportional to 630.45, 945.03 and 322.11

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Solution

The fourth proportional to 630.45, 945.03 and 322.11 is: 482.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.45 : 945.03 = 322.11 : x
  2. Step 2: Convert to fraction form
    630.45/945.03 = 322.11/x
  3. Step 3: Cross multiply
    630.45x = 945.03 × 322.11
  4. Step 4: Simplify right side
    630.45x = 304,403.61
  5. Step 5: Solve for x
    x = 304,403.61/630.45
  6. Step 6: Final answer
    x = 482.84

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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.