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Finding the Fourth Proportional to 145.99, 201.18 and 96.85

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Solution

The fourth proportional to 145.99, 201.18 and 96.85 is: 133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.99 : 201.18 = 96.85 : x
  2. Step 2: Convert to fraction form
    145.99/201.18 = 96.85/x
  3. Step 3: Cross multiply
    145.99x = 201.18 × 96.85
  4. Step 4: Simplify right side
    145.99x = 19,484.28
  5. Step 5: Solve for x
    x = 19,484.28/145.99
  6. Step 6: Final answer
    x = 133.46

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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.