Home / 1,342.14-2,012.56-417.79

Finding the Fourth Proportional to 1,342.14, 2,012.56 and 417.79

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Solution

The fourth proportional to 1,342.14, 2,012.56 and 417.79 is: 626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.14 : 2,012.56 = 417.79 : x
  2. Step 2: Convert to fraction form
    1,342.14/2,012.56 = 417.79/x
  3. Step 3: Cross multiply
    1,342.14x = 2,012.56 × 417.79
  4. Step 4: Simplify right side
    1,342.14x = 840,831.26
  5. Step 5: Solve for x
    x = 840,831.26/1,342.14
  6. Step 6: Final answer
    x = 626.49

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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.