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Finding the Fourth Proportional to 1,738, 2,607 and 698.46

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Solution

The fourth proportional to 1,738, 2,607 and 698.46 is: 1,047.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738 : 2,607 = 698.46 : x
  2. Step 2: Convert to fraction form
    1,738/2,607 = 698.46/x
  3. Step 3: Cross multiply
    1,738x = 2,607 × 698.46
  4. Step 4: Simplify right side
    1,738x = 1,820,885.22
  5. Step 5: Solve for x
    x = 1,820,885.22/1,738
  6. Step 6: Final answer
    x = 1,047.69

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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.