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Finding the Fourth Proportional to 741.63, 1,023.45 and 446.90

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Solution

The fourth proportional to 741.63, 1,023.45 and 446.90 is: 616.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.63 : 1,023.45 = 446.90 : x
  2. Step 2: Convert to fraction form
    741.63/1,023.45 = 446.90/x
  3. Step 3: Cross multiply
    741.63x = 1,023.45 × 446.90
  4. Step 4: Simplify right side
    741.63x = 457,379.81
  5. Step 5: Solve for x
    x = 457,379.81/741.63
  6. Step 6: Final answer
    x = 616.72

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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.