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Finding the Fourth Proportional to 452.76, 623.48 and 328.20

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Solution

The fourth proportional to 452.76, 623.48 and 328.20 is: 451.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.76 : 623.48 = 328.20 : x
  2. Step 2: Convert to fraction form
    452.76/623.48 = 328.20/x
  3. Step 3: Cross multiply
    452.76x = 623.48 × 328.20
  4. Step 4: Simplify right side
    452.76x = 204,626.14
  5. Step 5: Solve for x
    x = 204,626.14/452.76
  6. Step 6: Final answer
    x = 451.95

Related Problems

Find fourth proportional to 226.38, 311.74 and 164.10
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Double scale
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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.