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Finding the Fourth Proportional to 602.15, 831.17 and 416.25

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Solution

The fourth proportional to 602.15, 831.17 and 416.25 is: 574.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.15 : 831.17 = 416.25 : x
  2. Step 2: Convert to fraction form
    602.15/831.17 = 416.25/x
  3. Step 3: Cross multiply
    602.15x = 831.17 × 416.25
  4. Step 4: Simplify right side
    602.15x = 345,975.55
  5. Step 5: Solve for x
    x = 345,975.55/602.15
  6. Step 6: Final answer
    x = 574.57

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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.