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Finding the Fourth Proportional to 1,074.90, 1,612.35 and 294.91

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Solution

The fourth proportional to 1,074.90, 1,612.35 and 294.91 is: 442.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.90 : 1,612.35 = 294.91 : x
  2. Step 2: Convert to fraction form
    1,074.90/1,612.35 = 294.91/x
  3. Step 3: Cross multiply
    1,074.90x = 1,612.35 × 294.91
  4. Step 4: Simplify right side
    1,074.90x = 475,504.42
  5. Step 5: Solve for x
    x = 475,504.42/1,074.90
  6. Step 6: Final answer
    x = 442.37

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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.