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Finding the Fourth Proportional to 1,533.76, 2,300.16 and 667.84

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Solution

The fourth proportional to 1,533.76, 2,300.16 and 667.84 is: 1,001.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.76 : 2,300.16 = 667.84 : x
  2. Step 2: Convert to fraction form
    1,533.76/2,300.16 = 667.84/x
  3. Step 3: Cross multiply
    1,533.76x = 2,300.16 × 667.84
  4. Step 4: Simplify right side
    1,533.76x = 1,536,138.85
  5. Step 5: Solve for x
    x = 1,536,138.85/1,533.76
  6. Step 6: Final answer
    x = 1,001.55

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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.