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Finding the Fourth Proportional to 913.04, 1,367.81 and 603.98

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Solution

The fourth proportional to 913.04, 1,367.81 and 603.98 is: 904.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.04 : 1,367.81 = 603.98 : x
  2. Step 2: Convert to fraction form
    913.04/1,367.81 = 603.98/x
  3. Step 3: Cross multiply
    913.04x = 1,367.81 × 603.98
  4. Step 4: Simplify right side
    913.04x = 826,127.97
  5. Step 5: Solve for x
    x = 826,127.97/913.04
  6. Step 6: Final answer
    x = 904.81

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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.