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Finding the Fourth Proportional to 887.46, 1,330.37 and 425.01

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Solution

The fourth proportional to 887.46, 1,330.37 and 425.01 is: 637.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.46 : 1,330.37 = 425.01 : x
  2. Step 2: Convert to fraction form
    887.46/1,330.37 = 425.01/x
  3. Step 3: Cross multiply
    887.46x = 1,330.37 × 425.01
  4. Step 4: Simplify right side
    887.46x = 565,418.43
  5. Step 5: Solve for x
    x = 565,418.43/887.46
  6. Step 6: Final answer
    x = 637.12

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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.