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Finding the Fourth Proportional to 637.68, 955.74 and 454.70

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Solution

The fourth proportional to 637.68, 955.74 and 454.70 is: 681.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.68 : 955.74 = 454.70 : x
  2. Step 2: Convert to fraction form
    637.68/955.74 = 454.70/x
  3. Step 3: Cross multiply
    637.68x = 955.74 × 454.70
  4. Step 4: Simplify right side
    637.68x = 434,574.98
  5. Step 5: Solve for x
    x = 434,574.98/637.68
  6. Step 6: Final answer
    x = 681.49

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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.