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Finding the Fourth Proportional to 446.76, 616.68 and 330.12

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Solution

The fourth proportional to 446.76, 616.68 and 330.12 is: 455.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.76 : 616.68 = 330.12 : x
  2. Step 2: Convert to fraction form
    446.76/616.68 = 330.12/x
  3. Step 3: Cross multiply
    446.76x = 616.68 × 330.12
  4. Step 4: Simplify right side
    446.76x = 203,578.40
  5. Step 5: Solve for x
    x = 203,578.40/446.76
  6. Step 6: Final answer
    x = 455.68

Related Problems

Find fourth proportional to 223.38, 308.34 and 165.06
Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.