Home / 1,075.03-1,605.44-929.07

Finding the Fourth Proportional to 1,075.03, 1,605.44 and 929.07

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Solution

The fourth proportional to 1,075.03, 1,605.44 and 929.07 is: 1,387.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.03 : 1,605.44 = 929.07 : x
  2. Step 2: Convert to fraction form
    1,075.03/1,605.44 = 929.07/x
  3. Step 3: Cross multiply
    1,075.03x = 1,605.44 × 929.07
  4. Step 4: Simplify right side
    1,075.03x = 1,491,568.46
  5. Step 5: Solve for x
    x = 1,491,568.46/1,075.03
  6. Step 6: Final answer
    x = 1,387.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.