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Finding the Fourth Proportional to 633.50, 874.01 and 384.72

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Solution

The fourth proportional to 633.50, 874.01 and 384.72 is: 530.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.50 : 874.01 = 384.72 : x
  2. Step 2: Convert to fraction form
    633.50/874.01 = 384.72/x
  3. Step 3: Cross multiply
    633.50x = 874.01 × 384.72
  4. Step 4: Simplify right side
    633.50x = 336,249.13
  5. Step 5: Solve for x
    x = 336,249.13/633.50
  6. Step 6: Final answer
    x = 530.78

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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.