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Finding the Fourth Proportional to 1,075.57, 1,613.48 and 382.09

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Solution

The fourth proportional to 1,075.57, 1,613.48 and 382.09 is: 573.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.57 : 1,613.48 = 382.09 : x
  2. Step 2: Convert to fraction form
    1,075.57/1,613.48 = 382.09/x
  3. Step 3: Cross multiply
    1,075.57x = 1,613.48 × 382.09
  4. Step 4: Simplify right side
    1,075.57x = 616,494.57
  5. Step 5: Solve for x
    x = 616,494.57/1,075.57
  6. Step 6: Final answer
    x = 573.18

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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.