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Finding the Fourth Proportional to 633.34, 873.99 and 384.61

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Solution

The fourth proportional to 633.34, 873.99 and 384.61 is: 530.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.34 : 873.99 = 384.61 : x
  2. Step 2: Convert to fraction form
    633.34/873.99 = 384.61/x
  3. Step 3: Cross multiply
    633.34x = 873.99 × 384.61
  4. Step 4: Simplify right side
    633.34x = 336,145.29
  5. Step 5: Solve for x
    x = 336,145.29/633.34
  6. Step 6: Final answer
    x = 530.75

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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.