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Finding the Fourth Proportional to 993.88, 1,482.89 and 889.48

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Solution

The fourth proportional to 993.88, 1,482.89 and 889.48 is: 1,327.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.88 : 1,482.89 = 889.48 : x
  2. Step 2: Convert to fraction form
    993.88/1,482.89 = 889.48/x
  3. Step 3: Cross multiply
    993.88x = 1,482.89 × 889.48
  4. Step 4: Simplify right side
    993.88x = 1,319,001.00
  5. Step 5: Solve for x
    x = 1,319,001.00/993.88
  6. Step 6: Final answer
    x = 1,327.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.