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Finding the Fourth Proportional to 1,233.41, 1,848.60 and 712.40

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Solution

The fourth proportional to 1,233.41, 1,848.60 and 712.40 is: 1,067.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.41 : 1,848.60 = 712.40 : x
  2. Step 2: Convert to fraction form
    1,233.41/1,848.60 = 712.40/x
  3. Step 3: Cross multiply
    1,233.41x = 1,848.60 × 712.40
  4. Step 4: Simplify right side
    1,233.41x = 1,316,933.40
  5. Step 5: Solve for x
    x = 1,316,933.40/1,233.41
  6. Step 6: Final answer
    x = 1,067.72

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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.