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Finding the Fourth Proportional to 650.84, 898.11 and 388.98

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Solution

The fourth proportional to 650.84, 898.11 and 388.98 is: 536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.84 : 898.11 = 388.98 : x
  2. Step 2: Convert to fraction form
    650.84/898.11 = 388.98/x
  3. Step 3: Cross multiply
    650.84x = 898.11 × 388.98
  4. Step 4: Simplify right side
    650.84x = 349,346.83
  5. Step 5: Solve for x
    x = 349,346.83/650.84
  6. Step 6: Final answer
    x = 536.77

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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.