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Finding the Fourth Proportional to 675.63, 932.73 and 455.74

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Solution

The fourth proportional to 675.63, 932.73 and 455.74 is: 629.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.63 : 932.73 = 455.74 : x
  2. Step 2: Convert to fraction form
    675.63/932.73 = 455.74/x
  3. Step 3: Cross multiply
    675.63x = 932.73 × 455.74
  4. Step 4: Simplify right side
    675.63x = 425,082.37
  5. Step 5: Solve for x
    x = 425,082.37/675.63
  6. Step 6: Final answer
    x = 629.16

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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.