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Finding the Fourth Proportional to 907.62, 1,252.45 and 558.31

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Solution

The fourth proportional to 907.62, 1,252.45 and 558.31 is: 770.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.62 : 1,252.45 = 558.31 : x
  2. Step 2: Convert to fraction form
    907.62/1,252.45 = 558.31/x
  3. Step 3: Cross multiply
    907.62x = 1,252.45 × 558.31
  4. Step 4: Simplify right side
    907.62x = 699,255.36
  5. Step 5: Solve for x
    x = 699,255.36/907.62
  6. Step 6: Final answer
    x = 770.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.