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Finding the Fourth Proportional to 293.76, 440.58 and 147.47

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Solution

The fourth proportional to 293.76, 440.58 and 147.47 is: 221.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.76 : 440.58 = 147.47 : x
  2. Step 2: Convert to fraction form
    293.76/440.58 = 147.47/x
  3. Step 3: Cross multiply
    293.76x = 440.58 × 147.47
  4. Step 4: Simplify right side
    293.76x = 64,970.13
  5. Step 5: Solve for x
    x = 64,970.13/293.76
  6. Step 6: Final answer
    x = 221.17

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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.