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Finding the Fourth Proportional to 549.24, 757.80 and 383.28

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Solution

The fourth proportional to 549.24, 757.80 and 383.28 is: 528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.24 : 757.80 = 383.28 : x
  2. Step 2: Convert to fraction form
    549.24/757.80 = 383.28/x
  3. Step 3: Cross multiply
    549.24x = 757.80 × 383.28
  4. Step 4: Simplify right side
    549.24x = 290,449.58
  5. Step 5: Solve for x
    x = 290,449.58/549.24
  6. Step 6: Final answer
    x = 528.82

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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.