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Finding the Fourth Proportional to 706.44, 974.66 and 457.95

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Solution

The fourth proportional to 706.44, 974.66 and 457.95 is: 631.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.44 : 974.66 = 457.95 : x
  2. Step 2: Convert to fraction form
    706.44/974.66 = 457.95/x
  3. Step 3: Cross multiply
    706.44x = 974.66 × 457.95
  4. Step 4: Simplify right side
    706.44x = 446,345.55
  5. Step 5: Solve for x
    x = 446,345.55/706.44
  6. Step 6: Final answer
    x = 631.82

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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.