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Finding the Fourth Proportional to 549.36, 760.11 and 479.58

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Solution

The fourth proportional to 549.36, 760.11 and 479.58 is: 663.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.36 : 760.11 = 479.58 : x
  2. Step 2: Convert to fraction form
    549.36/760.11 = 479.58/x
  3. Step 3: Cross multiply
    549.36x = 760.11 × 479.58
  4. Step 4: Simplify right side
    549.36x = 364,533.55
  5. Step 5: Solve for x
    x = 364,533.55/549.36
  6. Step 6: Final answer
    x = 663.56

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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.