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Finding the Fourth Proportional to 706.73, 974.99 and 509.81

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Solution

The fourth proportional to 706.73, 974.99 and 509.81 is: 703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.73 : 974.99 = 509.81 : x
  2. Step 2: Convert to fraction form
    706.73/974.99 = 509.81/x
  3. Step 3: Cross multiply
    706.73x = 974.99 × 509.81
  4. Step 4: Simplify right side
    706.73x = 497,056.05
  5. Step 5: Solve for x
    x = 497,056.05/706.73
  6. Step 6: Final answer
    x = 703.32

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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.