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Finding the Fourth Proportional to 629.49, 868.65 and 367.53

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Solution

The fourth proportional to 629.49, 868.65 and 367.53 is: 507.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.49 : 868.65 = 367.53 : x
  2. Step 2: Convert to fraction form
    629.49/868.65 = 367.53/x
  3. Step 3: Cross multiply
    629.49x = 868.65 × 367.53
  4. Step 4: Simplify right side
    629.49x = 319,254.93
  5. Step 5: Solve for x
    x = 319,254.93/629.49
  6. Step 6: Final answer
    x = 507.16

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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.