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Finding the Fourth Proportional to 625.02, 930.78 and 603.42

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Solution

The fourth proportional to 625.02, 930.78 and 603.42 is: 898.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.02 : 930.78 = 603.42 : x
  2. Step 2: Convert to fraction form
    625.02/930.78 = 603.42/x
  3. Step 3: Cross multiply
    625.02x = 930.78 × 603.42
  4. Step 4: Simplify right side
    625.02x = 561,651.27
  5. Step 5: Solve for x
    x = 561,651.27/625.02
  6. Step 6: Final answer
    x = 898.61

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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.