Home / 1,364.17-2,046.26-390.28

Finding the Fourth Proportional to 1,364.17, 2,046.26 and 390.28

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Solution

The fourth proportional to 1,364.17, 2,046.26 and 390.28 is: 585.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.17 : 2,046.26 = 390.28 : x
  2. Step 2: Convert to fraction form
    1,364.17/2,046.26 = 390.28/x
  3. Step 3: Cross multiply
    1,364.17x = 2,046.26 × 390.28
  4. Step 4: Simplify right side
    1,364.17x = 798,602.17
  5. Step 5: Solve for x
    x = 798,602.17/1,364.17
  6. Step 6: Final answer
    x = 585.41

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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.