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Finding the Fourth Proportional to 663.33, 916.29 and 495.66

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Solution

The fourth proportional to 663.33, 916.29 and 495.66 is: 684.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.33 : 916.29 = 495.66 : x
  2. Step 2: Convert to fraction form
    663.33/916.29 = 495.66/x
  3. Step 3: Cross multiply
    663.33x = 916.29 × 495.66
  4. Step 4: Simplify right side
    663.33x = 454,168.30
  5. Step 5: Solve for x
    x = 454,168.30/663.33
  6. Step 6: Final answer
    x = 684.68

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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.