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Finding the Fourth Proportional to 630.51, 944.20 and 447.04

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Solution

The fourth proportional to 630.51, 944.20 and 447.04 is: 669.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.51 : 944.20 = 447.04 : x
  2. Step 2: Convert to fraction form
    630.51/944.20 = 447.04/x
  3. Step 3: Cross multiply
    630.51x = 944.20 × 447.04
  4. Step 4: Simplify right side
    630.51x = 422,095.17
  5. Step 5: Solve for x
    x = 422,095.17/630.51
  6. Step 6: Final answer
    x = 669.45

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Double scale
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Similar ratio
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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.