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Finding the Fourth Proportional to 384.65, 530.82 and 235.29

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Solution

The fourth proportional to 384.65, 530.82 and 235.29 is: 324.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.65 : 530.82 = 235.29 : x
  2. Step 2: Convert to fraction form
    384.65/530.82 = 235.29/x
  3. Step 3: Cross multiply
    384.65x = 530.82 × 235.29
  4. Step 4: Simplify right side
    384.65x = 124,896.64
  5. Step 5: Solve for x
    x = 124,896.64/384.65
  6. Step 6: Final answer
    x = 324.71

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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.