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Finding the Fourth Proportional to 673.95, 1,005.99 and 624.48

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Solution

The fourth proportional to 673.95, 1,005.99 and 624.48 is: 932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.95 : 1,005.99 = 624.48 : x
  2. Step 2: Convert to fraction form
    673.95/1,005.99 = 624.48/x
  3. Step 3: Cross multiply
    673.95x = 1,005.99 × 624.48
  4. Step 4: Simplify right side
    673.95x = 628,220.64
  5. Step 5: Solve for x
    x = 628,220.64/673.95
  6. Step 6: Final answer
    x = 932.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.