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Finding the Fourth Proportional to 602.40, 831.29 and 369.53

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Solution

The fourth proportional to 602.40, 831.29 and 369.53 is: 509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.40 : 831.29 = 369.53 : x
  2. Step 2: Convert to fraction form
    602.40/831.29 = 369.53/x
  3. Step 3: Cross multiply
    602.40x = 831.29 × 369.53
  4. Step 4: Simplify right side
    602.40x = 307,180.59
  5. Step 5: Solve for x
    x = 307,180.59/602.40
  6. Step 6: Final answer
    x = 509.93

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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.