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Finding the Fourth Proportional to 1,333.92, 1,998 and 1,319.16

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Solution

The fourth proportional to 1,333.92, 1,998 and 1,319.16 is: 1,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333.92 : 1,998 = 1,319.16 : x
  2. Step 2: Convert to fraction form
    1,333.92/1,998 = 1,319.16/x
  3. Step 3: Cross multiply
    1,333.92x = 1,998 × 1,319.16
  4. Step 4: Simplify right side
    1,333.92x = 2,635,681.68
  5. Step 5: Solve for x
    x = 2,635,681.68/1,333.92
  6. Step 6: Final answer
    x = 1,975.89

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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.