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Finding the Fourth Proportional to 1,245.66, 1,868.90 and 596.45

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Solution

The fourth proportional to 1,245.66, 1,868.90 and 596.45 is: 894.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.66 : 1,868.90 = 596.45 : x
  2. Step 2: Convert to fraction form
    1,245.66/1,868.90 = 596.45/x
  3. Step 3: Cross multiply
    1,245.66x = 1,868.90 × 596.45
  4. Step 4: Simplify right side
    1,245.66x = 1,114,693.08
  5. Step 5: Solve for x
    x = 1,114,693.08/1,245.66
  6. Step 6: Final answer
    x = 894.86

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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.