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Finding the Fourth Proportional to 274.90, 411.48 and 152.86

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Solution

The fourth proportional to 274.90, 411.48 and 152.86 is: 228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.90 : 411.48 = 152.86 : x
  2. Step 2: Convert to fraction form
    274.90/411.48 = 152.86/x
  3. Step 3: Cross multiply
    274.90x = 411.48 × 152.86
  4. Step 4: Simplify right side
    274.90x = 62,898.83
  5. Step 5: Solve for x
    x = 62,898.83/274.90
  6. Step 6: Final answer
    x = 228.81

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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.