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Finding the Fourth Proportional to 48.76, 72.66 and 46

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Solution

The fourth proportional to 48.76, 72.66 and 46 is: 68.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.76 : 72.66 = 46 : x
  2. Step 2: Convert to fraction form
    48.76/72.66 = 46/x
  3. Step 3: Cross multiply
    48.76x = 72.66 × 46
  4. Step 4: Simplify right side
    48.76x = 3,342.36
  5. Step 5: Solve for x
    x = 3,342.36/48.76
  6. Step 6: Final answer
    x = 68.55

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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.