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Finding the Fourth Proportional to 605.78, 903.56 and 508.88

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Solution

The fourth proportional to 605.78, 903.56 and 508.88 is: 759.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.78 : 903.56 = 508.88 : x
  2. Step 2: Convert to fraction form
    605.78/903.56 = 508.88/x
  3. Step 3: Cross multiply
    605.78x = 903.56 × 508.88
  4. Step 4: Simplify right side
    605.78x = 459,803.33
  5. Step 5: Solve for x
    x = 459,803.33/605.78
  6. Step 6: Final answer
    x = 759.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.