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Finding the Fourth Proportional to 984.22, 1,477.24 and 497.61

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Solution

The fourth proportional to 984.22, 1,477.24 and 497.61 is: 746.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.22 : 1,477.24 = 497.61 : x
  2. Step 2: Convert to fraction form
    984.22/1,477.24 = 497.61/x
  3. Step 3: Cross multiply
    984.22x = 1,477.24 × 497.61
  4. Step 4: Simplify right side
    984.22x = 735,089.40
  5. Step 5: Solve for x
    x = 735,089.40/984.22
  6. Step 6: Final answer
    x = 746.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.