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Finding the Fourth Proportional to 703.98, 972.36 and 517.19

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Solution

The fourth proportional to 703.98, 972.36 and 517.19 is: 714.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.98 : 972.36 = 517.19 : x
  2. Step 2: Convert to fraction form
    703.98/972.36 = 517.19/x
  3. Step 3: Cross multiply
    703.98x = 972.36 × 517.19
  4. Step 4: Simplify right side
    703.98x = 502,890.01
  5. Step 5: Solve for x
    x = 502,890.01/703.98
  6. Step 6: Final answer
    x = 714.35

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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.