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Finding the Fourth Proportional to 655.06, 903.90 and 375.28

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Solution

The fourth proportional to 655.06, 903.90 and 375.28 is: 517.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.06 : 903.90 = 375.28 : x
  2. Step 2: Convert to fraction form
    655.06/903.90 = 375.28/x
  3. Step 3: Cross multiply
    655.06x = 903.90 × 375.28
  4. Step 4: Simplify right side
    655.06x = 339,215.59
  5. Step 5: Solve for x
    x = 339,215.59/655.06
  6. Step 6: Final answer
    x = 517.84

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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.