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Finding the Fourth Proportional to 374.54, 563.10 and 302.90

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Solution

The fourth proportional to 374.54, 563.10 and 302.90 is: 455.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.54 : 563.10 = 302.90 : x
  2. Step 2: Convert to fraction form
    374.54/563.10 = 302.90/x
  3. Step 3: Cross multiply
    374.54x = 563.10 × 302.90
  4. Step 4: Simplify right side
    374.54x = 170,562.99
  5. Step 5: Solve for x
    x = 170,562.99/374.54
  6. Step 6: Final answer
    x = 455.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.