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Finding the Fourth Proportional to 43.03, 64.81 and 39.34

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Solution

The fourth proportional to 43.03, 64.81 and 39.34 is: 59.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.03 : 64.81 = 39.34 : x
  2. Step 2: Convert to fraction form
    43.03/64.81 = 39.34/x
  3. Step 3: Cross multiply
    43.03x = 64.81 × 39.34
  4. Step 4: Simplify right side
    43.03x = 2,549.30
  5. Step 5: Solve for x
    x = 2,549.30/43.03
  6. Step 6: Final answer
    x = 59.25

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.