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Finding the Fourth Proportional to 43.30, 60.06 and 39.70

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Solution

The fourth proportional to 43.30, 60.06 and 39.70 is: 55.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.30 : 60.06 = 39.70 : x
  2. Step 2: Convert to fraction form
    43.30/60.06 = 39.70/x
  3. Step 3: Cross multiply
    43.30x = 60.06 × 39.70
  4. Step 4: Simplify right side
    43.30x = 2,384.38
  5. Step 5: Solve for x
    x = 2,384.38/43.30
  6. Step 6: Final answer
    x = 55.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.