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Finding the Fourth Proportional to 518.12, 775.65 and 334.99

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Solution

The fourth proportional to 518.12, 775.65 and 334.99 is: 501.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.12 : 775.65 = 334.99 : x
  2. Step 2: Convert to fraction form
    518.12/775.65 = 334.99/x
  3. Step 3: Cross multiply
    518.12x = 775.65 × 334.99
  4. Step 4: Simplify right side
    518.12x = 259,834.99
  5. Step 5: Solve for x
    x = 259,834.99/518.12
  6. Step 6: Final answer
    x = 501.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.