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Finding the Fourth Proportional to 1,328.92, 1,993.36 and 598.08

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Solution

The fourth proportional to 1,328.92, 1,993.36 and 598.08 is: 897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328.92 : 1,993.36 = 598.08 : x
  2. Step 2: Convert to fraction form
    1,328.92/1,993.36 = 598.08/x
  3. Step 3: Cross multiply
    1,328.92x = 1,993.36 × 598.08
  4. Step 4: Simplify right side
    1,328.92x = 1,192,188.75
  5. Step 5: Solve for x
    x = 1,192,188.75/1,328.92
  6. Step 6: Final answer
    x = 897.11

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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.