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Finding the Fourth Proportional to 1,104.89, 1,657.58 and 374.45

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Solution

The fourth proportional to 1,104.89, 1,657.58 and 374.45 is: 561.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.89 : 1,657.58 = 374.45 : x
  2. Step 2: Convert to fraction form
    1,104.89/1,657.58 = 374.45/x
  3. Step 3: Cross multiply
    1,104.89x = 1,657.58 × 374.45
  4. Step 4: Simplify right side
    1,104.89x = 620,670.67
  5. Step 5: Solve for x
    x = 620,670.67/1,104.89
  6. Step 6: Final answer
    x = 561.75

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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.