Home / 603.12-831.96-396.24

Finding the Fourth Proportional to 603.12, 831.96 and 396.24

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Solution

The fourth proportional to 603.12, 831.96 and 396.24 is: 546.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.12 : 831.96 = 396.24 : x
  2. Step 2: Convert to fraction form
    603.12/831.96 = 396.24/x
  3. Step 3: Cross multiply
    603.12x = 831.96 × 396.24
  4. Step 4: Simplify right side
    603.12x = 329,655.83
  5. Step 5: Solve for x
    x = 329,655.83/603.12
  6. Step 6: Final answer
    x = 546.58

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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.