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Finding the Fourth Proportional to 579.52, 799.76 and 346.76

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Solution

The fourth proportional to 579.52, 799.76 and 346.76 is: 478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.52 : 799.76 = 346.76 : x
  2. Step 2: Convert to fraction form
    579.52/799.76 = 346.76/x
  3. Step 3: Cross multiply
    579.52x = 799.76 × 346.76
  4. Step 4: Simplify right side
    579.52x = 277,324.78
  5. Step 5: Solve for x
    x = 277,324.78/579.52
  6. Step 6: Final answer
    x = 478.54

Related Problems

Find fourth proportional to 289.76, 399.88 and 173.38
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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.