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Finding the Fourth Proportional to 145.21, 217.87 and 62.96

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Solution

The fourth proportional to 145.21, 217.87 and 62.96 is: 94.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.21 : 217.87 = 62.96 : x
  2. Step 2: Convert to fraction form
    145.21/217.87 = 62.96/x
  3. Step 3: Cross multiply
    145.21x = 217.87 × 62.96
  4. Step 4: Simplify right side
    145.21x = 13,717.10
  5. Step 5: Solve for x
    x = 13,717.10/145.21
  6. Step 6: Final answer
    x = 94.47

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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.