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Finding the Fourth Proportional to 1,112.66, 1,670 and 593.11

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Solution

The fourth proportional to 1,112.66, 1,670 and 593.11 is: 890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.66 : 1,670 = 593.11 : x
  2. Step 2: Convert to fraction form
    1,112.66/1,670 = 593.11/x
  3. Step 3: Cross multiply
    1,112.66x = 1,670 × 593.11
  4. Step 4: Simplify right side
    1,112.66x = 990,485.35
  5. Step 5: Solve for x
    x = 990,485.35/1,112.66
  6. Step 6: Final answer
    x = 890.20

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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.