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Finding the Fourth Proportional to 650.40, 897.58 and 384.78

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Solution

The fourth proportional to 650.40, 897.58 and 384.78 is: 531.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.40 : 897.58 = 384.78 : x
  2. Step 2: Convert to fraction form
    650.40/897.58 = 384.78/x
  3. Step 3: Cross multiply
    650.40x = 897.58 × 384.78
  4. Step 4: Simplify right side
    650.40x = 345,367.11
  5. Step 5: Solve for x
    x = 345,367.11/650.40
  6. Step 6: Final answer
    x = 531.00

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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.