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Finding the Fourth Proportional to 549.96, 756.97 and 455.65

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Solution

The fourth proportional to 549.96, 756.97 and 455.65 is: 627.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.96 : 756.97 = 455.65 : x
  2. Step 2: Convert to fraction form
    549.96/756.97 = 455.65/x
  3. Step 3: Cross multiply
    549.96x = 756.97 × 455.65
  4. Step 4: Simplify right side
    549.96x = 344,913.76
  5. Step 5: Solve for x
    x = 344,913.76/549.96
  6. Step 6: Final answer
    x = 627.16

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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.