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Finding the Fourth Proportional to 1,758.60, 2,638.43 and 526.05

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Solution

The fourth proportional to 1,758.60, 2,638.43 and 526.05 is: 789.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.60 : 2,638.43 = 526.05 : x
  2. Step 2: Convert to fraction form
    1,758.60/2,638.43 = 526.05/x
  3. Step 3: Cross multiply
    1,758.60x = 2,638.43 × 526.05
  4. Step 4: Simplify right side
    1,758.60x = 1,387,945.44
  5. Step 5: Solve for x
    x = 1,387,945.44/1,758.60
  6. Step 6: Final answer
    x = 789.23

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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.