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Finding the Fourth Proportional to 1,703.21, 2,554.50 and 607.61

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Solution

The fourth proportional to 1,703.21, 2,554.50 and 607.61 is: 911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,703.21 : 2,554.50 = 607.61 : x
  2. Step 2: Convert to fraction form
    1,703.21/2,554.50 = 607.61/x
  3. Step 3: Cross multiply
    1,703.21x = 2,554.50 × 607.61
  4. Step 4: Simplify right side
    1,703.21x = 1,552,139.75
  5. Step 5: Solve for x
    x = 1,552,139.75/1,703.21
  6. Step 6: Final answer
    x = 911.30

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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.