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Finding the Fourth Proportional to 1,474.90, 2,210.91 and 704.50

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Solution

The fourth proportional to 1,474.90, 2,210.91 and 704.50 is: 1,056.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.90 : 2,210.91 = 704.50 : x
  2. Step 2: Convert to fraction form
    1,474.90/2,210.91 = 704.50/x
  3. Step 3: Cross multiply
    1,474.90x = 2,210.91 × 704.50
  4. Step 4: Simplify right side
    1,474.90x = 1,557,586.10
  5. Step 5: Solve for x
    x = 1,557,586.10/1,474.90
  6. Step 6: Final answer
    x = 1,056.06

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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.