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Finding the Fourth Proportional to 746.60, 1,030.04 and 447.86

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Solution

The fourth proportional to 746.60, 1,030.04 and 447.86 is: 617.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.60 : 1,030.04 = 447.86 : x
  2. Step 2: Convert to fraction form
    746.60/1,030.04 = 447.86/x
  3. Step 3: Cross multiply
    746.60x = 1,030.04 × 447.86
  4. Step 4: Simplify right side
    746.60x = 461,316.99
  5. Step 5: Solve for x
    x = 461,316.99/746.60
  6. Step 6: Final answer
    x = 617.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.