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Finding the Fourth Proportional to 667.06, 998.70 and 354

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Solution

The fourth proportional to 667.06, 998.70 and 354 is: 530.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.06 : 998.70 = 354 : x
  2. Step 2: Convert to fraction form
    667.06/998.70 = 354/x
  3. Step 3: Cross multiply
    667.06x = 998.70 × 354
  4. Step 4: Simplify right side
    667.06x = 353,539.80
  5. Step 5: Solve for x
    x = 353,539.80/667.06
  6. Step 6: Final answer
    x = 530.00

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