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Finding the Fourth Proportional to 995.04, 1,491.12 and 603.72

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Solution

The fourth proportional to 995.04, 1,491.12 and 603.72 is: 904.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.04 : 1,491.12 = 603.72 : x
  2. Step 2: Convert to fraction form
    995.04/1,491.12 = 603.72/x
  3. Step 3: Cross multiply
    995.04x = 1,491.12 × 603.72
  4. Step 4: Simplify right side
    995.04x = 900,218.97
  5. Step 5: Solve for x
    x = 900,218.97/995.04
  6. Step 6: Final answer
    x = 904.71

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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.