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Finding the Fourth Proportional to 1,075.36, 1,613.25 and 344.88

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Solution

The fourth proportional to 1,075.36, 1,613.25 and 344.88 is: 517.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.36 : 1,613.25 = 344.88 : x
  2. Step 2: Convert to fraction form
    1,075.36/1,613.25 = 344.88/x
  3. Step 3: Cross multiply
    1,075.36x = 1,613.25 × 344.88
  4. Step 4: Simplify right side
    1,075.36x = 556,377.66
  5. Step 5: Solve for x
    x = 556,377.66/1,075.36
  6. Step 6: Final answer
    x = 517.39

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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.