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Finding the Fourth Proportional to 1,103.51, 1,654.65 and 526.38

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Solution

The fourth proportional to 1,103.51, 1,654.65 and 526.38 is: 789.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.51 : 1,654.65 = 526.38 : x
  2. Step 2: Convert to fraction form
    1,103.51/1,654.65 = 526.38/x
  3. Step 3: Cross multiply
    1,103.51x = 1,654.65 × 526.38
  4. Step 4: Simplify right side
    1,103.51x = 870,974.67
  5. Step 5: Solve for x
    x = 870,974.67/1,103.51
  6. Step 6: Final answer
    x = 789.28

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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.