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Finding the Fourth Proportional to 383.46, 529.64 and 380.76

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Solution

The fourth proportional to 383.46, 529.64 and 380.76 is: 525.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.46 : 529.64 = 380.76 : x
  2. Step 2: Convert to fraction form
    383.46/529.64 = 380.76/x
  3. Step 3: Cross multiply
    383.46x = 529.64 × 380.76
  4. Step 4: Simplify right side
    383.46x = 201,665.73
  5. Step 5: Solve for x
    x = 201,665.73/383.46
  6. Step 6: Final answer
    x = 525.91

Related Problems

Find fourth proportional to 191.73, 264.82 and 190.38
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Double scale
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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.