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Finding the Fourth Proportional to 1,177.30, 1,765.73 and 446.72

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Solution

The fourth proportional to 1,177.30, 1,765.73 and 446.72 is: 669.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.30 : 1,765.73 = 446.72 : x
  2. Step 2: Convert to fraction form
    1,177.30/1,765.73 = 446.72/x
  3. Step 3: Cross multiply
    1,177.30x = 1,765.73 × 446.72
  4. Step 4: Simplify right side
    1,177.30x = 788,779.19
  5. Step 5: Solve for x
    x = 788,779.19/1,177.30
  6. Step 6: Final answer
    x = 669.99

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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.