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Finding the Fourth Proportional to 446.15, 669.23 and 214.99

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Solution

The fourth proportional to 446.15, 669.23 and 214.99 is: 322.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.15 : 669.23 = 214.99 : x
  2. Step 2: Convert to fraction form
    446.15/669.23 = 214.99/x
  3. Step 3: Cross multiply
    446.15x = 669.23 × 214.99
  4. Step 4: Simplify right side
    446.15x = 143,877.76
  5. Step 5: Solve for x
    x = 143,877.76/446.15
  6. Step 6: Final answer
    x = 322.49

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Double scale
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Similar ratio
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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.