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Finding the Fourth Proportional to 43.40, 65.13 and 26.29

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Solution

The fourth proportional to 43.40, 65.13 and 26.29 is: 39.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.40 : 65.13 = 26.29 : x
  2. Step 2: Convert to fraction form
    43.40/65.13 = 26.29/x
  3. Step 3: Cross multiply
    43.40x = 65.13 × 26.29
  4. Step 4: Simplify right side
    43.40x = 1,712.10
  5. Step 5: Solve for x
    x = 1,712.10/43.40
  6. Step 6: Final answer
    x = 39.45

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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.