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Finding the Fourth Proportional to 630.98, 871.82 and 608.79

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Solution

The fourth proportional to 630.98, 871.82 and 608.79 is: 841.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.98 : 871.82 = 608.79 : x
  2. Step 2: Convert to fraction form
    630.98/871.82 = 608.79/x
  3. Step 3: Cross multiply
    630.98x = 871.82 × 608.79
  4. Step 4: Simplify right side
    630.98x = 530,752.25
  5. Step 5: Solve for x
    x = 530,752.25/630.98
  6. Step 6: Final answer
    x = 841.16

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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.