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Finding the Fourth Proportional to 423.53, 584.56 and 275.90

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Solution

The fourth proportional to 423.53, 584.56 and 275.90 is: 380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.53 : 584.56 = 275.90 : x
  2. Step 2: Convert to fraction form
    423.53/584.56 = 275.90/x
  3. Step 3: Cross multiply
    423.53x = 584.56 × 275.90
  4. Step 4: Simplify right side
    423.53x = 161,280.10
  5. Step 5: Solve for x
    x = 161,280.10/423.53
  6. Step 6: Final answer
    x = 380.80

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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.