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Finding the Fourth Proportional to 66.34, 91.52 and 43.04

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Solution

The fourth proportional to 66.34, 91.52 and 43.04 is: 59.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.34 : 91.52 = 43.04 : x
  2. Step 2: Convert to fraction form
    66.34/91.52 = 43.04/x
  3. Step 3: Cross multiply
    66.34x = 91.52 × 43.04
  4. Step 4: Simplify right side
    66.34x = 3,938.59
  5. Step 5: Solve for x
    x = 3,938.59/66.34
  6. Step 6: Final answer
    x = 59.37

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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.