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Finding the Fourth Proportional to 1,101.56, 1,652.33 and 279.83

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Solution

The fourth proportional to 1,101.56, 1,652.33 and 279.83 is: 419.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.56 : 1,652.33 = 279.83 : x
  2. Step 2: Convert to fraction form
    1,101.56/1,652.33 = 279.83/x
  3. Step 3: Cross multiply
    1,101.56x = 1,652.33 × 279.83
  4. Step 4: Simplify right side
    1,101.56x = 462,361.84
  5. Step 5: Solve for x
    x = 462,361.84/1,101.56
  6. Step 6: Final answer
    x = 419.74

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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.