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Finding the Fourth Proportional to 1,103.19, 1,654.79 and 555.83

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Solution

The fourth proportional to 1,103.19, 1,654.79 and 555.83 is: 833.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.19 : 1,654.79 = 555.83 : x
  2. Step 2: Convert to fraction form
    1,103.19/1,654.79 = 555.83/x
  3. Step 3: Cross multiply
    1,103.19x = 1,654.79 × 555.83
  4. Step 4: Simplify right side
    1,103.19x = 919,783.28
  5. Step 5: Solve for x
    x = 919,783.28/1,103.19
  6. Step 6: Final answer
    x = 833.75

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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.