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Finding the Fourth Proportional to 601.86, 903.51 and 393.90

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Solution

The fourth proportional to 601.86, 903.51 and 393.90 is: 591.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.86 : 903.51 = 393.90 : x
  2. Step 2: Convert to fraction form
    601.86/903.51 = 393.90/x
  3. Step 3: Cross multiply
    601.86x = 903.51 × 393.90
  4. Step 4: Simplify right side
    601.86x = 355,892.59
  5. Step 5: Solve for x
    x = 355,892.59/601.86
  6. Step 6: Final answer
    x = 591.32

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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.