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Finding the Fourth Proportional to 1,112.23, 1,534.83 and 670.04

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Solution

The fourth proportional to 1,112.23, 1,534.83 and 670.04 is: 924.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.23 : 1,534.83 = 670.04 : x
  2. Step 2: Convert to fraction form
    1,112.23/1,534.83 = 670.04/x
  3. Step 3: Cross multiply
    1,112.23x = 1,534.83 × 670.04
  4. Step 4: Simplify right side
    1,112.23x = 1,028,397.49
  5. Step 5: Solve for x
    x = 1,028,397.49/1,112.23
  6. Step 6: Final answer
    x = 924.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.