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Finding the Fourth Proportional to 847.46, 1,271.09 and 750.74

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Solution

The fourth proportional to 847.46, 1,271.09 and 750.74 is: 1,126.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.46 : 1,271.09 = 750.74 : x
  2. Step 2: Convert to fraction form
    847.46/1,271.09 = 750.74/x
  3. Step 3: Cross multiply
    847.46x = 1,271.09 × 750.74
  4. Step 4: Simplify right side
    847.46x = 954,253.63
  5. Step 5: Solve for x
    x = 954,253.63/847.46
  6. Step 6: Final answer
    x = 1,126.01

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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.