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Finding the Fourth Proportional to 650.40, 897.50 and 355.67

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Solution

The fourth proportional to 650.40, 897.50 and 355.67 is: 490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.40 : 897.50 = 355.67 : x
  2. Step 2: Convert to fraction form
    650.40/897.50 = 355.67/x
  3. Step 3: Cross multiply
    650.40x = 897.50 × 355.67
  4. Step 4: Simplify right side
    650.40x = 319,213.83
  5. Step 5: Solve for x
    x = 319,213.83/650.40
  6. Step 6: Final answer
    x = 490.80

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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.