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Finding the Fourth Proportional to 1,075.41, 1,613.10 and 345.04

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Solution

The fourth proportional to 1,075.41, 1,613.10 and 345.04 is: 517.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.41 : 1,613.10 = 345.04 : x
  2. Step 2: Convert to fraction form
    1,075.41/1,613.10 = 345.04/x
  3. Step 3: Cross multiply
    1,075.41x = 1,613.10 × 345.04
  4. Step 4: Simplify right side
    1,075.41x = 556,584.02
  5. Step 5: Solve for x
    x = 556,584.02/1,075.41
  6. Step 6: Final answer
    x = 517.56

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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.