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Finding the Fourth Proportional to 1,075.39, 1,613.39 and 450.98

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Solution

The fourth proportional to 1,075.39, 1,613.39 and 450.98 is: 676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.39 : 1,613.39 = 450.98 : x
  2. Step 2: Convert to fraction form
    1,075.39/1,613.39 = 450.98/x
  3. Step 3: Cross multiply
    1,075.39x = 1,613.39 × 450.98
  4. Step 4: Simplify right side
    1,075.39x = 727,602.35
  5. Step 5: Solve for x
    x = 727,602.35/1,075.39
  6. Step 6: Final answer
    x = 676.60

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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.