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Finding the Fourth Proportional to 553.91, 834.71 and 458.53

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Solution

The fourth proportional to 553.91, 834.71 and 458.53 is: 690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.91 : 834.71 = 458.53 : x
  2. Step 2: Convert to fraction form
    553.91/834.71 = 458.53/x
  3. Step 3: Cross multiply
    553.91x = 834.71 × 458.53
  4. Step 4: Simplify right side
    553.91x = 382,735.20
  5. Step 5: Solve for x
    x = 382,735.20/553.91
  6. Step 6: Final answer
    x = 690.98

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.