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Finding the Fourth Proportional to 1,885.61, 2,828.06 and 653.03

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Solution

The fourth proportional to 1,885.61, 2,828.06 and 653.03 is: 979.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.61 : 2,828.06 = 653.03 : x
  2. Step 2: Convert to fraction form
    1,885.61/2,828.06 = 653.03/x
  3. Step 3: Cross multiply
    1,885.61x = 2,828.06 × 653.03
  4. Step 4: Simplify right side
    1,885.61x = 1,846,803.67
  5. Step 5: Solve for x
    x = 1,846,803.67/1,885.61
  6. Step 6: Final answer
    x = 979.42

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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.