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Finding the Fourth Proportional to 602.83, 831.70 and 381.57

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Solution

The fourth proportional to 602.83, 831.70 and 381.57 is: 526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.83 : 831.70 = 381.57 : x
  2. Step 2: Convert to fraction form
    602.83/831.70 = 381.57/x
  3. Step 3: Cross multiply
    602.83x = 831.70 × 381.57
  4. Step 4: Simplify right side
    602.83x = 317,351.77
  5. Step 5: Solve for x
    x = 317,351.77/602.83
  6. Step 6: Final answer
    x = 526.44

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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.