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Finding the Fourth Proportional to 746.19, 1,119.45 and 259.24

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Solution

The fourth proportional to 746.19, 1,119.45 and 259.24 is: 388.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.19 : 1,119.45 = 259.24 : x
  2. Step 2: Convert to fraction form
    746.19/1,119.45 = 259.24/x
  3. Step 3: Cross multiply
    746.19x = 1,119.45 × 259.24
  4. Step 4: Simplify right side
    746.19x = 290,206.22
  5. Step 5: Solve for x
    x = 290,206.22/746.19
  6. Step 6: Final answer
    x = 388.92

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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.