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Finding the Fourth Proportional to 1,098.79, 1,516.31 and 601.43

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Solution

The fourth proportional to 1,098.79, 1,516.31 and 601.43 is: 829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.79 : 1,516.31 = 601.43 : x
  2. Step 2: Convert to fraction form
    1,098.79/1,516.31 = 601.43/x
  3. Step 3: Cross multiply
    1,098.79x = 1,516.31 × 601.43
  4. Step 4: Simplify right side
    1,098.79x = 911,945.14
  5. Step 5: Solve for x
    x = 911,945.14/1,098.79
  6. Step 6: Final answer
    x = 829.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.