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Finding the Fourth Proportional to 384, 530.04 and 228.72

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Solution

The fourth proportional to 384, 530.04 and 228.72 is: 315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    384 : 530.04 = 228.72 : x
  2. Step 2: Convert to fraction form
    384/530.04 = 228.72/x
  3. Step 3: Cross multiply
    384x = 530.04 × 228.72
  4. Step 4: Simplify right side
    384x = 121,230.75
  5. Step 5: Solve for x
    x = 121,230.75/384
  6. Step 6: Final answer
    x = 315.71

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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.