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Finding the Fourth Proportional to 145.48, 200.10 and 135.76

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Solution

The fourth proportional to 145.48, 200.10 and 135.76 is: 186.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.48 : 200.10 = 135.76 : x
  2. Step 2: Convert to fraction form
    145.48/200.10 = 135.76/x
  3. Step 3: Cross multiply
    145.48x = 200.10 × 135.76
  4. Step 4: Simplify right side
    145.48x = 27,165.58
  5. Step 5: Solve for x
    x = 27,165.58/145.48
  6. Step 6: Final answer
    x = 186.73

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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.