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Finding the Fourth Proportional to 601.78, 903.45 and 328.06

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Solution

The fourth proportional to 601.78, 903.45 and 328.06 is: 492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.78 : 903.45 = 328.06 : x
  2. Step 2: Convert to fraction form
    601.78/903.45 = 328.06/x
  3. Step 3: Cross multiply
    601.78x = 903.45 × 328.06
  4. Step 4: Simplify right side
    601.78x = 296,382.86
  5. Step 5: Solve for x
    x = 296,382.86/601.78
  6. Step 6: Final answer
    x = 492.51

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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.