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Finding the Fourth Proportional to 1,154.72, 1,739.54 and 1,097.42

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Solution

The fourth proportional to 1,154.72, 1,739.54 and 1,097.42 is: 1,653.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.72 : 1,739.54 = 1,097.42 : x
  2. Step 2: Convert to fraction form
    1,154.72/1,739.54 = 1,097.42/x
  3. Step 3: Cross multiply
    1,154.72x = 1,739.54 × 1,097.42
  4. Step 4: Simplify right side
    1,154.72x = 1,909,000.03
  5. Step 5: Solve for x
    x = 1,909,000.03/1,154.72
  6. Step 6: Final answer
    x = 1,653.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.