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Finding the Fourth Proportional to 48.59, 66.58 and 48.28

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Solution

The fourth proportional to 48.59, 66.58 and 48.28 is: 66.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.59 : 66.58 = 48.28 : x
  2. Step 2: Convert to fraction form
    48.59/66.58 = 48.28/x
  3. Step 3: Cross multiply
    48.59x = 66.58 × 48.28
  4. Step 4: Simplify right side
    48.59x = 3,214.48
  5. Step 5: Solve for x
    x = 3,214.48/48.59
  6. Step 6: Final answer
    x = 66.16

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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.