Home / 1,065.44-1,470.32-623.36

Finding the Fourth Proportional to 1,065.44, 1,470.32 and 623.36

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Solution

The fourth proportional to 1,065.44, 1,470.32 and 623.36 is: 860.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.44 : 1,470.32 = 623.36 : x
  2. Step 2: Convert to fraction form
    1,065.44/1,470.32 = 623.36/x
  3. Step 3: Cross multiply
    1,065.44x = 1,470.32 × 623.36
  4. Step 4: Simplify right side
    1,065.44x = 916,528.21
  5. Step 5: Solve for x
    x = 916,528.21/1,065.44
  6. Step 6: Final answer
    x = 860.24

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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.