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Finding the Fourth Proportional to 579.76, 800.24 and 372.76

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Solution

The fourth proportional to 579.76, 800.24 and 372.76 is: 514.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.76 : 800.24 = 372.76 : x
  2. Step 2: Convert to fraction form
    579.76/800.24 = 372.76/x
  3. Step 3: Cross multiply
    579.76x = 800.24 × 372.76
  4. Step 4: Simplify right side
    579.76x = 298,297.46
  5. Step 5: Solve for x
    x = 298,297.46/579.76
  6. Step 6: Final answer
    x = 514.52

Related Problems

Find fourth proportional to 289.88, 400.12 and 186.38
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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.