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Finding the Fourth Proportional to 650.25, 897.36 and 355.55

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Solution

The fourth proportional to 650.25, 897.36 and 355.55 is: 490.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.25 : 897.36 = 355.55 : x
  2. Step 2: Convert to fraction form
    650.25/897.36 = 355.55/x
  3. Step 3: Cross multiply
    650.25x = 897.36 × 355.55
  4. Step 4: Simplify right side
    650.25x = 319,051.86
  5. Step 5: Solve for x
    x = 319,051.86/650.25
  6. Step 6: Final answer
    x = 490.66

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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.