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Finding the Fourth Proportional to 1,532.60, 2,297.30 and 838.20

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Solution

The fourth proportional to 1,532.60, 2,297.30 and 838.20 is: 1,256.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,532.60 : 2,297.30 = 838.20 : x
  2. Step 2: Convert to fraction form
    1,532.60/2,297.30 = 838.20/x
  3. Step 3: Cross multiply
    1,532.60x = 2,297.30 × 838.20
  4. Step 4: Simplify right side
    1,532.60x = 1,925,596.86
  5. Step 5: Solve for x
    x = 1,925,596.86/1,532.60
  6. Step 6: Final answer
    x = 1,256.42

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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.