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Finding the Fourth Proportional to 1,236.59, 1,854.34 and 370.70

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Solution

The fourth proportional to 1,236.59, 1,854.34 and 370.70 is: 555.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.59 : 1,854.34 = 370.70 : x
  2. Step 2: Convert to fraction form
    1,236.59/1,854.34 = 370.70/x
  3. Step 3: Cross multiply
    1,236.59x = 1,854.34 × 370.70
  4. Step 4: Simplify right side
    1,236.59x = 687,403.84
  5. Step 5: Solve for x
    x = 687,403.84/1,236.59
  6. Step 6: Final answer
    x = 555.89

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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.