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Finding the Fourth Proportional to 637.74, 954.54 and 418.56

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Solution

The fourth proportional to 637.74, 954.54 and 418.56 is: 626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.74 : 954.54 = 418.56 : x
  2. Step 2: Convert to fraction form
    637.74/954.54 = 418.56/x
  3. Step 3: Cross multiply
    637.74x = 954.54 × 418.56
  4. Step 4: Simplify right side
    637.74x = 399,532.26
  5. Step 5: Solve for x
    x = 399,532.26/637.74
  6. Step 6: Final answer
    x = 626.48

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1.5x scale

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.