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Finding the Fourth Proportional to 556.67, 834.99 and 145.80

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Solution

The fourth proportional to 556.67, 834.99 and 145.80 is: 218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.67 : 834.99 = 145.80 : x
  2. Step 2: Convert to fraction form
    556.67/834.99 = 145.80/x
  3. Step 3: Cross multiply
    556.67x = 834.99 × 145.80
  4. Step 4: Simplify right side
    556.67x = 121,742.93
  5. Step 5: Solve for x
    x = 121,742.93/556.67
  6. Step 6: Final answer
    x = 218.70

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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.