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Finding the Fourth Proportional to 703.83, 971.33 and 455.87

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Solution

The fourth proportional to 703.83, 971.33 and 455.87 is: 629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.83 : 971.33 = 455.87 : x
  2. Step 2: Convert to fraction form
    703.83/971.33 = 455.87/x
  3. Step 3: Cross multiply
    703.83x = 971.33 × 455.87
  4. Step 4: Simplify right side
    703.83x = 442,800.21
  5. Step 5: Solve for x
    x = 442,800.21/703.83
  6. Step 6: Final answer
    x = 629.13

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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.