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Finding the Fourth Proportional to 803.45, 1,202.58 and 727.67

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Solution

The fourth proportional to 803.45, 1,202.58 and 727.67 is: 1,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.45 : 1,202.58 = 727.67 : x
  2. Step 2: Convert to fraction form
    803.45/1,202.58 = 727.67/x
  3. Step 3: Cross multiply
    803.45x = 1,202.58 × 727.67
  4. Step 4: Simplify right side
    803.45x = 875,075.38
  5. Step 5: Solve for x
    x = 875,075.38/803.45
  6. Step 6: Final answer
    x = 1,089.15

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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.