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Finding the Fourth Proportional to 633.20, 873.74 and 384.52

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Solution

The fourth proportional to 633.20, 873.74 and 384.52 is: 530.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.20 : 873.74 = 384.52 : x
  2. Step 2: Convert to fraction form
    633.20/873.74 = 384.52/x
  3. Step 3: Cross multiply
    633.20x = 873.74 × 384.52
  4. Step 4: Simplify right side
    633.20x = 335,970.50
  5. Step 5: Solve for x
    x = 335,970.50/633.20
  6. Step 6: Final answer
    x = 530.59

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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.