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Finding the Fourth Proportional to 1,199.47, 1,798.60 and 549.65

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Solution

The fourth proportional to 1,199.47, 1,798.60 and 549.65 is: 824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.47 : 1,798.60 = 549.65 : x
  2. Step 2: Convert to fraction form
    1,199.47/1,798.60 = 549.65/x
  3. Step 3: Cross multiply
    1,199.47x = 1,798.60 × 549.65
  4. Step 4: Simplify right side
    1,199.47x = 988,600.49
  5. Step 5: Solve for x
    x = 988,600.49/1,199.47
  6. Step 6: Final answer
    x = 824.20

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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.