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Finding the Fourth Proportional to 446.76, 616.14 and 291.78

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Solution

The fourth proportional to 446.76, 616.14 and 291.78 is: 402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.76 : 616.14 = 291.78 : x
  2. Step 2: Convert to fraction form
    446.76/616.14 = 291.78/x
  3. Step 3: Cross multiply
    446.76x = 616.14 × 291.78
  4. Step 4: Simplify right side
    446.76x = 179,777.33
  5. Step 5: Solve for x
    x = 179,777.33/446.76
  6. Step 6: Final answer
    x = 402.40

Related Problems

Find fourth proportional to 223.38, 308.07 and 145.89
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.