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Finding the Fourth Proportional to 45.32, 68.03 and 29.12

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Solution

The fourth proportional to 45.32, 68.03 and 29.12 is: 43.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.32 : 68.03 = 29.12 : x
  2. Step 2: Convert to fraction form
    45.32/68.03 = 29.12/x
  3. Step 3: Cross multiply
    45.32x = 68.03 × 29.12
  4. Step 4: Simplify right side
    45.32x = 1,980.77
  5. Step 5: Solve for x
    x = 1,980.77/45.32
  6. Step 6: Final answer
    x = 43.70

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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.