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Finding the Fourth Proportional to 46.05, 63.53 and 31.29

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Solution

The fourth proportional to 46.05, 63.53 and 31.29 is: 43.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.05 : 63.53 = 31.29 : x
  2. Step 2: Convert to fraction form
    46.05/63.53 = 31.29/x
  3. Step 3: Cross multiply
    46.05x = 63.53 × 31.29
  4. Step 4: Simplify right side
    46.05x = 1,987.70
  5. Step 5: Solve for x
    x = 1,987.70/46.05
  6. Step 6: Final answer
    x = 43.16

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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.