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Finding the Fourth Proportional to 1,507.70, 2,261.78 and 533.73

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Solution

The fourth proportional to 1,507.70, 2,261.78 and 533.73 is: 800.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.70 : 2,261.78 = 533.73 : x
  2. Step 2: Convert to fraction form
    1,507.70/2,261.78 = 533.73/x
  3. Step 3: Cross multiply
    1,507.70x = 2,261.78 × 533.73
  4. Step 4: Simplify right side
    1,507.70x = 1,207,177.17
  5. Step 5: Solve for x
    x = 1,207,177.17/1,507.70
  6. Step 6: Final answer
    x = 800.67

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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.