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Finding the Fourth Proportional to 472.61, 652.05 and 276.09

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Solution

The fourth proportional to 472.61, 652.05 and 276.09 is: 380.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.61 : 652.05 = 276.09 : x
  2. Step 2: Convert to fraction form
    472.61/652.05 = 276.09/x
  3. Step 3: Cross multiply
    472.61x = 652.05 × 276.09
  4. Step 4: Simplify right side
    472.61x = 180,024.48
  5. Step 5: Solve for x
    x = 180,024.48/472.61
  6. Step 6: Final answer
    x = 380.92

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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.