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Finding the Fourth Proportional to 579.56, 799.68 and 346.76

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Solution

The fourth proportional to 579.56, 799.68 and 346.76 is: 478.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.56 : 799.68 = 346.76 : x
  2. Step 2: Convert to fraction form
    579.56/799.68 = 346.76/x
  3. Step 3: Cross multiply
    579.56x = 799.68 × 346.76
  4. Step 4: Simplify right side
    579.56x = 277,297.04
  5. Step 5: Solve for x
    x = 277,297.04/579.56
  6. Step 6: Final answer
    x = 478.46

Related Problems

Find fourth proportional to 289.78, 399.84 and 173.38
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.