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Finding the Fourth Proportional to 472.66, 652.23 and 276.19

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Solution

The fourth proportional to 472.66, 652.23 and 276.19 is: 381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.66 : 652.23 = 276.19 : x
  2. Step 2: Convert to fraction form
    472.66/652.23 = 276.19/x
  3. Step 3: Cross multiply
    472.66x = 652.23 × 276.19
  4. Step 4: Simplify right side
    472.66x = 180,139.40
  5. Step 5: Solve for x
    x = 180,139.40/472.66
  6. Step 6: Final answer
    x = 381.12

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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.