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Finding the Fourth Proportional to 145.16, 200.38 and 114.20

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Solution

The fourth proportional to 145.16, 200.38 and 114.20 is: 157.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.16 : 200.38 = 114.20 : x
  2. Step 2: Convert to fraction form
    145.16/200.38 = 114.20/x
  3. Step 3: Cross multiply
    145.16x = 200.38 × 114.20
  4. Step 4: Simplify right side
    145.16x = 22,883.40
  5. Step 5: Solve for x
    x = 22,883.40/145.16
  6. Step 6: Final answer
    x = 157.64

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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.