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Finding the Fourth Proportional to 671.01, 1,011.62 and 624.03

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Solution

The fourth proportional to 671.01, 1,011.62 and 624.03 is: 940.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.01 : 1,011.62 = 624.03 : x
  2. Step 2: Convert to fraction form
    671.01/1,011.62 = 624.03/x
  3. Step 3: Cross multiply
    671.01x = 1,011.62 × 624.03
  4. Step 4: Simplify right side
    671.01x = 631,278.11
  5. Step 5: Solve for x
    x = 631,278.11/671.01
  6. Step 6: Final answer
    x = 940.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.