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Finding the Fourth Proportional to 549.28, 756.70 and 383.19

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Solution

The fourth proportional to 549.28, 756.70 and 383.19 is: 527.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.28 : 756.70 = 383.19 : x
  2. Step 2: Convert to fraction form
    549.28/756.70 = 383.19/x
  3. Step 3: Cross multiply
    549.28x = 756.70 × 383.19
  4. Step 4: Simplify right side
    549.28x = 289,959.87
  5. Step 5: Solve for x
    x = 289,959.87/549.28
  6. Step 6: Final answer
    x = 527.89

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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.