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Finding the Fourth Proportional to 366.40, 547.38 and 279.49

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Solution

The fourth proportional to 366.40, 547.38 and 279.49 is: 417.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.40 : 547.38 = 279.49 : x
  2. Step 2: Convert to fraction form
    366.40/547.38 = 279.49/x
  3. Step 3: Cross multiply
    366.40x = 547.38 × 279.49
  4. Step 4: Simplify right side
    366.40x = 152,985.84
  5. Step 5: Solve for x
    x = 152,985.84/366.40
  6. Step 6: Final answer
    x = 417.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.