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Finding the Fourth Proportional to 1,075.92, 1,614.33 and 459.69

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Solution

The fourth proportional to 1,075.92, 1,614.33 and 459.69 is: 689.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.92 : 1,614.33 = 459.69 : x
  2. Step 2: Convert to fraction form
    1,075.92/1,614.33 = 459.69/x
  3. Step 3: Cross multiply
    1,075.92x = 1,614.33 × 459.69
  4. Step 4: Simplify right side
    1,075.92x = 742,091.36
  5. Step 5: Solve for x
    x = 742,091.36/1,075.92
  6. Step 6: Final answer
    x = 689.73

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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.