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Finding the Fourth Proportional to 699.71, 1,047.65 and 504.90

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Solution

The fourth proportional to 699.71, 1,047.65 and 504.90 is: 755.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.71 : 1,047.65 = 504.90 : x
  2. Step 2: Convert to fraction form
    699.71/1,047.65 = 504.90/x
  3. Step 3: Cross multiply
    699.71x = 1,047.65 × 504.90
  4. Step 4: Simplify right side
    699.71x = 528,955.96
  5. Step 5: Solve for x
    x = 528,955.96/699.71
  6. Step 6: Final answer
    x = 755.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.