Home / 1,158.98-1,738.53-418.70

Finding the Fourth Proportional to 1,158.98, 1,738.53 and 418.70

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Solution

The fourth proportional to 1,158.98, 1,738.53 and 418.70 is: 628.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.98 : 1,738.53 = 418.70 : x
  2. Step 2: Convert to fraction form
    1,158.98/1,738.53 = 418.70/x
  3. Step 3: Cross multiply
    1,158.98x = 1,738.53 × 418.70
  4. Step 4: Simplify right side
    1,158.98x = 727,926.86
  5. Step 5: Solve for x
    x = 727,926.86/1,158.98
  6. Step 6: Final answer
    x = 628.08

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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.