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Finding the Fourth Proportional to 602.38, 903.90 and 255.91

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Solution

The fourth proportional to 602.38, 903.90 and 255.91 is: 384.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.38 : 903.90 = 255.91 : x
  2. Step 2: Convert to fraction form
    602.38/903.90 = 255.91/x
  3. Step 3: Cross multiply
    602.38x = 903.90 × 255.91
  4. Step 4: Simplify right side
    602.38x = 231,317.05
  5. Step 5: Solve for x
    x = 231,317.05/602.38
  6. Step 6: Final answer
    x = 384.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.