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Finding the Fourth Proportional to 43.04, 59.36 and 31.38

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Solution

The fourth proportional to 43.04, 59.36 and 31.38 is: 43.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.04 : 59.36 = 31.38 : x
  2. Step 2: Convert to fraction form
    43.04/59.36 = 31.38/x
  3. Step 3: Cross multiply
    43.04x = 59.36 × 31.38
  4. Step 4: Simplify right side
    43.04x = 1,862.72
  5. Step 5: Solve for x
    x = 1,862.72/43.04
  6. Step 6: Final answer
    x = 43.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.