Home / 1,146.05-1,719.30-415.61

Finding the Fourth Proportional to 1,146.05, 1,719.30 and 415.61

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Solution

The fourth proportional to 1,146.05, 1,719.30 and 415.61 is: 623.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.05 : 1,719.30 = 415.61 : x
  2. Step 2: Convert to fraction form
    1,146.05/1,719.30 = 415.61/x
  3. Step 3: Cross multiply
    1,146.05x = 1,719.30 × 415.61
  4. Step 4: Simplify right side
    1,146.05x = 714,558.27
  5. Step 5: Solve for x
    x = 714,558.27/1,146.05
  6. Step 6: Final answer
    x = 623.50

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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.