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Finding the Fourth Proportional to 48.61, 66.59 and 43.75

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Solution

The fourth proportional to 48.61, 66.59 and 43.75 is: 59.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.61 : 66.59 = 43.75 : x
  2. Step 2: Convert to fraction form
    48.61/66.59 = 43.75/x
  3. Step 3: Cross multiply
    48.61x = 66.59 × 43.75
  4. Step 4: Simplify right side
    48.61x = 2,913.31
  5. Step 5: Solve for x
    x = 2,913.31/48.61
  6. Step 6: Final answer
    x = 59.93

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.