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Finding the Fourth Proportional to 49.04, 73.28 and 40.39

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Solution

The fourth proportional to 49.04, 73.28 and 40.39 is: 60.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.04 : 73.28 = 40.39 : x
  2. Step 2: Convert to fraction form
    49.04/73.28 = 40.39/x
  3. Step 3: Cross multiply
    49.04x = 73.28 × 40.39
  4. Step 4: Simplify right side
    49.04x = 2,959.78
  5. Step 5: Solve for x
    x = 2,959.78/49.04
  6. Step 6: Final answer
    x = 60.35

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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.