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Finding the Fourth Proportional to 637.94, 953.93 and 454.78

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Solution

The fourth proportional to 637.94, 953.93 and 454.78 is: 680.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.94 : 953.93 = 454.78 : x
  2. Step 2: Convert to fraction form
    637.94/953.93 = 454.78/x
  3. Step 3: Cross multiply
    637.94x = 953.93 × 454.78
  4. Step 4: Simplify right side
    637.94x = 433,828.29
  5. Step 5: Solve for x
    x = 433,828.29/637.94
  6. Step 6: Final answer
    x = 680.05

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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.