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Finding the Fourth Proportional to 425.48, 583.33 and 393.32

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Solution

The fourth proportional to 425.48, 583.33 and 393.32 is: 539.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.48 : 583.33 = 393.32 : x
  2. Step 2: Convert to fraction form
    425.48/583.33 = 393.32/x
  3. Step 3: Cross multiply
    425.48x = 583.33 × 393.32
  4. Step 4: Simplify right side
    425.48x = 229,435.36
  5. Step 5: Solve for x
    x = 229,435.36/425.48
  6. Step 6: Final answer
    x = 539.24

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.