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Finding the Fourth Proportional to 624.09, 939.87 and 568.74

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Solution

The fourth proportional to 624.09, 939.87 and 568.74 is: 856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.09 : 939.87 = 568.74 : x
  2. Step 2: Convert to fraction form
    624.09/939.87 = 568.74/x
  3. Step 3: Cross multiply
    624.09x = 939.87 × 568.74
  4. Step 4: Simplify right side
    624.09x = 534,541.66
  5. Step 5: Solve for x
    x = 534,541.66/624.09
  6. Step 6: Final answer
    x = 856.51

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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.