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Finding the Fourth Proportional to 602.96, 831.54 and 381.52

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Solution

The fourth proportional to 602.96, 831.54 and 381.52 is: 526.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.96 : 831.54 = 381.52 : x
  2. Step 2: Convert to fraction form
    602.96/831.54 = 381.52/x
  3. Step 3: Cross multiply
    602.96x = 831.54 × 381.52
  4. Step 4: Simplify right side
    602.96x = 317,249.14
  5. Step 5: Solve for x
    x = 317,249.14/602.96
  6. Step 6: Final answer
    x = 526.15

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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.