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Finding the Fourth Proportional to 602.94, 831.81 and 445.94

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Solution

The fourth proportional to 602.94, 831.81 and 445.94 is: 615.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.94 : 831.81 = 445.94 : x
  2. Step 2: Convert to fraction form
    602.94/831.81 = 445.94/x
  3. Step 3: Cross multiply
    602.94x = 831.81 × 445.94
  4. Step 4: Simplify right side
    602.94x = 370,933.19
  5. Step 5: Solve for x
    x = 370,933.19/602.94
  6. Step 6: Final answer
    x = 615.21

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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.