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Finding the Fourth Proportional to 274.93, 412.56 and 145.02

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Solution

The fourth proportional to 274.93, 412.56 and 145.02 is: 217.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.93 : 412.56 = 145.02 : x
  2. Step 2: Convert to fraction form
    274.93/412.56 = 145.02/x
  3. Step 3: Cross multiply
    274.93x = 412.56 × 145.02
  4. Step 4: Simplify right side
    274.93x = 59,831.00
  5. Step 5: Solve for x
    x = 59,831.00/274.93
  6. Step 6: Final answer
    x = 217.62

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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.