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Finding the Fourth Proportional to 722.06, 1,082.48 and 259.56

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Solution

The fourth proportional to 722.06, 1,082.48 and 259.56 is: 389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.06 : 1,082.48 = 259.56 : x
  2. Step 2: Convert to fraction form
    722.06/1,082.48 = 259.56/x
  3. Step 3: Cross multiply
    722.06x = 1,082.48 × 259.56
  4. Step 4: Simplify right side
    722.06x = 280,968.51
  5. Step 5: Solve for x
    x = 280,968.51/722.06
  6. Step 6: Final answer
    x = 389.12

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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.