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Finding the Fourth Proportional to 384.24, 573.96 and 275.16

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Solution

The fourth proportional to 384.24, 573.96 and 275.16 is: 411.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.24 : 573.96 = 275.16 : x
  2. Step 2: Convert to fraction form
    384.24/573.96 = 275.16/x
  3. Step 3: Cross multiply
    384.24x = 573.96 × 275.16
  4. Step 4: Simplify right side
    384.24x = 157,930.83
  5. Step 5: Solve for x
    x = 157,930.83/384.24
  6. Step 6: Final answer
    x = 411.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.