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Finding the Fourth Proportional to 894.07, 1,339.62 and 632.78

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Solution

The fourth proportional to 894.07, 1,339.62 and 632.78 is: 948.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.07 : 1,339.62 = 632.78 : x
  2. Step 2: Convert to fraction form
    894.07/1,339.62 = 632.78/x
  3. Step 3: Cross multiply
    894.07x = 1,339.62 × 632.78
  4. Step 4: Simplify right side
    894.07x = 847,684.26
  5. Step 5: Solve for x
    x = 847,684.26/894.07
  6. Step 6: Final answer
    x = 948.12

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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.