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Finding the Fourth Proportional to 1,101.68, 1,648.94 and 580.94

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Solution

The fourth proportional to 1,101.68, 1,648.94 and 580.94 is: 869.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.68 : 1,648.94 = 580.94 : x
  2. Step 2: Convert to fraction form
    1,101.68/1,648.94 = 580.94/x
  3. Step 3: Cross multiply
    1,101.68x = 1,648.94 × 580.94
  4. Step 4: Simplify right side
    1,101.68x = 957,935.20
  5. Step 5: Solve for x
    x = 957,935.20/1,101.68
  6. Step 6: Final answer
    x = 869.52

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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.