Home / 695.04-1,042.84-387.10

Finding the Fourth Proportional to 695.04, 1,042.84 and 387.10

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Solution

The fourth proportional to 695.04, 1,042.84 and 387.10 is: 580.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.04 : 1,042.84 = 387.10 : x
  2. Step 2: Convert to fraction form
    695.04/1,042.84 = 387.10/x
  3. Step 3: Cross multiply
    695.04x = 1,042.84 × 387.10
  4. Step 4: Simplify right side
    695.04x = 403,685.15
  5. Step 5: Solve for x
    x = 403,685.15/695.04
  6. Step 6: Final answer
    x = 580.81

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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.