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Finding the Fourth Proportional to 452.55, 623.79 and 354.15

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Solution

The fourth proportional to 452.55, 623.79 and 354.15 is: 488.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.55 : 623.79 = 354.15 : x
  2. Step 2: Convert to fraction form
    452.55/623.79 = 354.15/x
  3. Step 3: Cross multiply
    452.55x = 623.79 × 354.15
  4. Step 4: Simplify right side
    452.55x = 220,915.23
  5. Step 5: Solve for x
    x = 220,915.23/452.55
  6. Step 6: Final answer
    x = 488.16

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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.