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Finding the Fourth Proportional to 549.55, 824.51 and 256.94

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Solution

The fourth proportional to 549.55, 824.51 and 256.94 is: 385.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.55 : 824.51 = 256.94 : x
  2. Step 2: Convert to fraction form
    549.55/824.51 = 256.94/x
  3. Step 3: Cross multiply
    549.55x = 824.51 × 256.94
  4. Step 4: Simplify right side
    549.55x = 211,849.21
  5. Step 5: Solve for x
    x = 211,849.21/549.55
  6. Step 6: Final answer
    x = 385.49

Related Problems

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.