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Finding the Fourth Proportional to 904.18, 1,356.09 and 254.77

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Solution

The fourth proportional to 904.18, 1,356.09 and 254.77 is: 382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.18 : 1,356.09 = 254.77 : x
  2. Step 2: Convert to fraction form
    904.18/1,356.09 = 254.77/x
  3. Step 3: Cross multiply
    904.18x = 1,356.09 × 254.77
  4. Step 4: Simplify right side
    904.18x = 345,491.05
  5. Step 5: Solve for x
    x = 345,491.05/904.18
  6. Step 6: Final answer
    x = 382.10

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1.5x scale

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.