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Finding the Fourth Proportional to 46.15, 63.75 and 42.91

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Solution

The fourth proportional to 46.15, 63.75 and 42.91 is: 59.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.15 : 63.75 = 42.91 : x
  2. Step 2: Convert to fraction form
    46.15/63.75 = 42.91/x
  3. Step 3: Cross multiply
    46.15x = 63.75 × 42.91
  4. Step 4: Simplify right side
    46.15x = 2,735.51
  5. Step 5: Solve for x
    x = 2,735.51/46.15
  6. Step 6: Final answer
    x = 59.27

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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.