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Finding the Fourth Proportional to 902.58, 1,350.72 and 555.82

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Solution

The fourth proportional to 902.58, 1,350.72 and 555.82 is: 831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.58 : 1,350.72 = 555.82 : x
  2. Step 2: Convert to fraction form
    902.58/1,350.72 = 555.82/x
  3. Step 3: Cross multiply
    902.58x = 1,350.72 × 555.82
  4. Step 4: Simplify right side
    902.58x = 750,757.19
  5. Step 5: Solve for x
    x = 750,757.19/902.58
  6. Step 6: Final answer
    x = 831.79

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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.