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Finding the Fourth Proportional to 888.98, 1,226.82 and 495.99

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Solution

The fourth proportional to 888.98, 1,226.82 and 495.99 is: 684.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.98 : 1,226.82 = 495.99 : x
  2. Step 2: Convert to fraction form
    888.98/1,226.82 = 495.99/x
  3. Step 3: Cross multiply
    888.98x = 1,226.82 × 495.99
  4. Step 4: Simplify right side
    888.98x = 608,490.45
  5. Step 5: Solve for x
    x = 608,490.45/888.98
  6. Step 6: Final answer
    x = 684.49

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1.5x scale

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.