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Finding the Fourth Proportional to 713.64, 984.69 and 451.74

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Solution

The fourth proportional to 713.64, 984.69 and 451.74 is: 623.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.64 : 984.69 = 451.74 : x
  2. Step 2: Convert to fraction form
    713.64/984.69 = 451.74/x
  3. Step 3: Cross multiply
    713.64x = 984.69 × 451.74
  4. Step 4: Simplify right side
    713.64x = 444,823.86
  5. Step 5: Solve for x
    x = 444,823.86/713.64
  6. Step 6: Final answer
    x = 623.32

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1.5x scale

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.