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Finding the Fourth Proportional to 633.49, 873.97 and 384.64

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Solution

The fourth proportional to 633.49, 873.97 and 384.64 is: 530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.49 : 873.97 = 384.64 : x
  2. Step 2: Convert to fraction form
    633.49/873.97 = 384.64/x
  3. Step 3: Cross multiply
    633.49x = 873.97 × 384.64
  4. Step 4: Simplify right side
    633.49x = 336,163.82
  5. Step 5: Solve for x
    x = 336,163.82/633.49
  6. Step 6: Final answer
    x = 530.65

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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.