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Finding the Fourth Proportional to 603.18, 904.78 and 192.36

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Solution

The fourth proportional to 603.18, 904.78 and 192.36 is: 288.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.18 : 904.78 = 192.36 : x
  2. Step 2: Convert to fraction form
    603.18/904.78 = 192.36/x
  3. Step 3: Cross multiply
    603.18x = 904.78 × 192.36
  4. Step 4: Simplify right side
    603.18x = 174,043.48
  5. Step 5: Solve for x
    x = 174,043.48/603.18
  6. Step 6: Final answer
    x = 288.54

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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.