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Finding the Fourth Proportional to 494.76, 682.32 and 383.88

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Solution

The fourth proportional to 494.76, 682.32 and 383.88 is: 529.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.76 : 682.32 = 383.88 : x
  2. Step 2: Convert to fraction form
    494.76/682.32 = 383.88/x
  3. Step 3: Cross multiply
    494.76x = 682.32 × 383.88
  4. Step 4: Simplify right side
    494.76x = 261,929.00
  5. Step 5: Solve for x
    x = 261,929.00/494.76
  6. Step 6: Final answer
    x = 529.41

Related Problems

Find fourth proportional to 247.38, 341.16 and 191.94
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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.