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Finding the Fourth Proportional to 472.58, 652.30 and 276.18

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Solution

The fourth proportional to 472.58, 652.30 and 276.18 is: 381.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.58 : 652.30 = 276.18 : x
  2. Step 2: Convert to fraction form
    472.58/652.30 = 276.18/x
  3. Step 3: Cross multiply
    472.58x = 652.30 × 276.18
  4. Step 4: Simplify right side
    472.58x = 180,152.21
  5. Step 5: Solve for x
    x = 180,152.21/472.58
  6. Step 6: Final answer
    x = 381.21

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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.