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Finding the Fourth Proportional to 145.10, 200.25 and 82.93

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Solution

The fourth proportional to 145.10, 200.25 and 82.93 is: 114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.10 : 200.25 = 82.93 : x
  2. Step 2: Convert to fraction form
    145.10/200.25 = 82.93/x
  3. Step 3: Cross multiply
    145.10x = 200.25 × 82.93
  4. Step 4: Simplify right side
    145.10x = 16,606.32
  5. Step 5: Solve for x
    x = 16,606.32/145.10
  6. Step 6: Final answer
    x = 114.45

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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.