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Finding the Fourth Proportional to 500.70, 744.30 and 485.94

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Solution

The fourth proportional to 500.70, 744.30 and 485.94 is: 722.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.70 : 744.30 = 485.94 : x
  2. Step 2: Convert to fraction form
    500.70/744.30 = 485.94/x
  3. Step 3: Cross multiply
    500.70x = 744.30 × 485.94
  4. Step 4: Simplify right side
    500.70x = 361,678.99
  5. Step 5: Solve for x
    x = 361,678.99/500.70
  6. Step 6: Final answer
    x = 722.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.