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Finding the Fourth Proportional to 530.64, 796.32 and 338.40

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Solution

The fourth proportional to 530.64, 796.32 and 338.40 is: 507.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.64 : 796.32 = 338.40 : x
  2. Step 2: Convert to fraction form
    530.64/796.32 = 338.40/x
  3. Step 3: Cross multiply
    530.64x = 796.32 × 338.40
  4. Step 4: Simplify right side
    530.64x = 269,474.69
  5. Step 5: Solve for x
    x = 269,474.69/530.64
  6. Step 6: Final answer
    x = 507.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.