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Finding the Fourth Proportional to 1,498.08, 2,243.64 and 765.84

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Solution

The fourth proportional to 1,498.08, 2,243.64 and 765.84 is: 1,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,498.08 : 2,243.64 = 765.84 : x
  2. Step 2: Convert to fraction form
    1,498.08/2,243.64 = 765.84/x
  3. Step 3: Cross multiply
    1,498.08x = 2,243.64 × 765.84
  4. Step 4: Simplify right side
    1,498.08x = 1,718,269.26
  5. Step 5: Solve for x
    x = 1,718,269.26/1,498.08
  6. Step 6: Final answer
    x = 1,146.98

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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.