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Finding the Fourth Proportional to 2,603.83, 3,905.70 and 655.99

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Solution

The fourth proportional to 2,603.83, 3,905.70 and 655.99 is: 983.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.83 : 3,905.70 = 655.99 : x
  2. Step 2: Convert to fraction form
    2,603.83/3,905.70 = 655.99/x
  3. Step 3: Cross multiply
    2,603.83x = 3,905.70 × 655.99
  4. Step 4: Simplify right side
    2,603.83x = 2,562,100.14
  5. Step 5: Solve for x
    x = 2,562,100.14/2,603.83
  6. Step 6: Final answer
    x = 983.97

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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.