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Finding the Fourth Proportional to 549.80, 760.02 and 440.36

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Solution

The fourth proportional to 549.80, 760.02 and 440.36 is: 608.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.80 : 760.02 = 440.36 : x
  2. Step 2: Convert to fraction form
    549.80/760.02 = 440.36/x
  3. Step 3: Cross multiply
    549.80x = 760.02 × 440.36
  4. Step 4: Simplify right side
    549.80x = 334,682.41
  5. Step 5: Solve for x
    x = 334,682.41/549.80
  6. Step 6: Final answer
    x = 608.73

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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.