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Finding the Fourth Proportional to 693.48, 954.18 and 635.88

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Solution

The fourth proportional to 693.48, 954.18 and 635.88 is: 874.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.48 : 954.18 = 635.88 : x
  2. Step 2: Convert to fraction form
    693.48/954.18 = 635.88/x
  3. Step 3: Cross multiply
    693.48x = 954.18 × 635.88
  4. Step 4: Simplify right side
    693.48x = 606,743.98
  5. Step 5: Solve for x
    x = 606,743.98/693.48
  6. Step 6: Final answer
    x = 874.93

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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.