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Finding the Fourth Proportional to 48.89, 73.34 and 43.07

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Solution

The fourth proportional to 48.89, 73.34 and 43.07 is: 64.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.89 : 73.34 = 43.07 : x
  2. Step 2: Convert to fraction form
    48.89/73.34 = 43.07/x
  3. Step 3: Cross multiply
    48.89x = 73.34 × 43.07
  4. Step 4: Simplify right side
    48.89x = 3,158.17
  5. Step 5: Solve for x
    x = 3,158.17/48.89
  6. Step 6: Final answer
    x = 64.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.