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Finding the Fourth Proportional to 612.43, 919.55 and 601.49

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Solution

The fourth proportional to 612.43, 919.55 and 601.49 is: 903.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.43 : 919.55 = 601.49 : x
  2. Step 2: Convert to fraction form
    612.43/919.55 = 601.49/x
  3. Step 3: Cross multiply
    612.43x = 919.55 × 601.49
  4. Step 4: Simplify right side
    612.43x = 553,103.93
  5. Step 5: Solve for x
    x = 553,103.93/612.43
  6. Step 6: Final answer
    x = 903.13

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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.