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Finding the Fourth Proportional to 1,505.55, 2,259.05 and 1,181.55

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Solution

The fourth proportional to 1,505.55, 2,259.05 and 1,181.55 is: 1,772.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.55 : 2,259.05 = 1,181.55 : x
  2. Step 2: Convert to fraction form
    1,505.55/2,259.05 = 1,181.55/x
  3. Step 3: Cross multiply
    1,505.55x = 2,259.05 × 1,181.55
  4. Step 4: Simplify right side
    1,505.55x = 2,669,174.62
  5. Step 5: Solve for x
    x = 2,669,174.62/1,505.55
  6. Step 6: Final answer
    x = 1,772.89

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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.