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Finding the Fourth Proportional to 1,106.05, 1,658.98 and 375.55

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Solution

The fourth proportional to 1,106.05, 1,658.98 and 375.55 is: 563.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.05 : 1,658.98 = 375.55 : x
  2. Step 2: Convert to fraction form
    1,106.05/1,658.98 = 375.55/x
  3. Step 3: Cross multiply
    1,106.05x = 1,658.98 × 375.55
  4. Step 4: Simplify right side
    1,106.05x = 623,029.94
  5. Step 5: Solve for x
    x = 623,029.94/1,106.05
  6. Step 6: Final answer
    x = 563.29

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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.