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Finding the Fourth Proportional to 1,148.57, 1,722.73 and 369.13

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Solution

The fourth proportional to 1,148.57, 1,722.73 and 369.13 is: 553.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.57 : 1,722.73 = 369.13 : x
  2. Step 2: Convert to fraction form
    1,148.57/1,722.73 = 369.13/x
  3. Step 3: Cross multiply
    1,148.57x = 1,722.73 × 369.13
  4. Step 4: Simplify right side
    1,148.57x = 635,908.11
  5. Step 5: Solve for x
    x = 635,908.11/1,148.57
  6. Step 6: Final answer
    x = 553.65

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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.