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Finding the Fourth Proportional to 874.56, 1,303.38 and 846.88

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Solution

The fourth proportional to 874.56, 1,303.38 and 846.88 is: 1,262.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    874.56 : 1,303.38 = 846.88 : x
  2. Step 2: Convert to fraction form
    874.56/1,303.38 = 846.88/x
  3. Step 3: Cross multiply
    874.56x = 1,303.38 × 846.88
  4. Step 4: Simplify right side
    874.56x = 1,103,806.45
  5. Step 5: Solve for x
    x = 1,103,806.45/874.56
  6. Step 6: Final answer
    x = 1,262.13

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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.