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Finding the Fourth Proportional to 452.10, 623.59 and 320.88

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Solution

The fourth proportional to 452.10, 623.59 and 320.88 is: 442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.10 : 623.59 = 320.88 : x
  2. Step 2: Convert to fraction form
    452.10/623.59 = 320.88/x
  3. Step 3: Cross multiply
    452.10x = 623.59 × 320.88
  4. Step 4: Simplify right side
    452.10x = 200,097.56
  5. Step 5: Solve for x
    x = 200,097.56/452.10
  6. Step 6: Final answer
    x = 442.60

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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.