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Finding the Fourth Proportional to 630.09, 945.24 and 219.12

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Solution

The fourth proportional to 630.09, 945.24 and 219.12 is: 328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.09 : 945.24 = 219.12 : x
  2. Step 2: Convert to fraction form
    630.09/945.24 = 219.12/x
  3. Step 3: Cross multiply
    630.09x = 945.24 × 219.12
  4. Step 4: Simplify right side
    630.09x = 207,117.85
  5. Step 5: Solve for x
    x = 207,117.85/630.09
  6. Step 6: Final answer
    x = 328.71

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1.5x scale

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.