Home / 1,107.19-1,527.41-664.32

Finding the Fourth Proportional to 1,107.19, 1,527.41 and 664.32

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Solution

The fourth proportional to 1,107.19, 1,527.41 and 664.32 is: 916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.19 : 1,527.41 = 664.32 : x
  2. Step 2: Convert to fraction form
    1,107.19/1,527.41 = 664.32/x
  3. Step 3: Cross multiply
    1,107.19x = 1,527.41 × 664.32
  4. Step 4: Simplify right side
    1,107.19x = 1,014,678.05
  5. Step 5: Solve for x
    x = 1,014,678.05/1,107.19
  6. Step 6: Final answer
    x = 916.45

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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.