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Finding the Fourth Proportional to 1,521.44, 2,283.26 and 547.64

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Solution

The fourth proportional to 1,521.44, 2,283.26 and 547.64 is: 821.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.44 : 2,283.26 = 547.64 : x
  2. Step 2: Convert to fraction form
    1,521.44/2,283.26 = 547.64/x
  3. Step 3: Cross multiply
    1,521.44x = 2,283.26 × 547.64
  4. Step 4: Simplify right side
    1,521.44x = 1,250,404.51
  5. Step 5: Solve for x
    x = 1,250,404.51/1,521.44
  6. Step 6: Final answer
    x = 821.86

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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.