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Finding the Fourth Proportional to 1,098.65, 1,516.13 and 601.28

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Solution

The fourth proportional to 1,098.65, 1,516.13 and 601.28 is: 829.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.65 : 1,516.13 = 601.28 : x
  2. Step 2: Convert to fraction form
    1,098.65/1,516.13 = 601.28/x
  3. Step 3: Cross multiply
    1,098.65x = 1,516.13 × 601.28
  4. Step 4: Simplify right side
    1,098.65x = 911,618.65
  5. Step 5: Solve for x
    x = 911,618.65/1,098.65
  6. Step 6: Final answer
    x = 829.76

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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.