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Finding the Fourth Proportional to 145.47, 217.93 and 54.10

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Solution

The fourth proportional to 145.47, 217.93 and 54.10 is: 81.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.47 : 217.93 = 54.10 : x
  2. Step 2: Convert to fraction form
    145.47/217.93 = 54.10/x
  3. Step 3: Cross multiply
    145.47x = 217.93 × 54.10
  4. Step 4: Simplify right side
    145.47x = 11,790.01
  5. Step 5: Solve for x
    x = 11,790.01/145.47
  6. Step 6: Final answer
    x = 81.05

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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.