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Finding the Fourth Proportional to 984.50, 1,477.04 and 291.17

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Solution

The fourth proportional to 984.50, 1,477.04 and 291.17 is: 436.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.50 : 1,477.04 = 291.17 : x
  2. Step 2: Convert to fraction form
    984.50/1,477.04 = 291.17/x
  3. Step 3: Cross multiply
    984.50x = 1,477.04 × 291.17
  4. Step 4: Simplify right side
    984.50x = 430,067.82
  5. Step 5: Solve for x
    x = 430,067.82/984.50
  6. Step 6: Final answer
    x = 436.84

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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.