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Finding the Fourth Proportional to 941.21, 1,411.84 and 447.67

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Solution

The fourth proportional to 941.21, 1,411.84 and 447.67 is: 671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.21 : 1,411.84 = 447.67 : x
  2. Step 2: Convert to fraction form
    941.21/1,411.84 = 447.67/x
  3. Step 3: Cross multiply
    941.21x = 1,411.84 × 447.67
  4. Step 4: Simplify right side
    941.21x = 632,038.22
  5. Step 5: Solve for x
    x = 632,038.22/941.21
  6. Step 6: Final answer
    x = 671.51

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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.