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Finding the Fourth Proportional to 605.46, 903.75 and 528.42

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Solution

The fourth proportional to 605.46, 903.75 and 528.42 is: 788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.46 : 903.75 = 528.42 : x
  2. Step 2: Convert to fraction form
    605.46/903.75 = 528.42/x
  3. Step 3: Cross multiply
    605.46x = 903.75 × 528.42
  4. Step 4: Simplify right side
    605.46x = 477,559.58
  5. Step 5: Solve for x
    x = 477,559.58/605.46
  6. Step 6: Final answer
    x = 788.75

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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.