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Finding the Fourth Proportional to 485.44, 722.98 and 472.48

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Solution

The fourth proportional to 485.44, 722.98 and 472.48 is: 703.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.44 : 722.98 = 472.48 : x
  2. Step 2: Convert to fraction form
    485.44/722.98 = 472.48/x
  3. Step 3: Cross multiply
    485.44x = 722.98 × 472.48
  4. Step 4: Simplify right side
    485.44x = 341,593.59
  5. Step 5: Solve for x
    x = 341,593.59/485.44
  6. Step 6: Final answer
    x = 703.68

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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.