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Finding the Fourth Proportional to 849.15, 1,272.51 and 632.61

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Solution

The fourth proportional to 849.15, 1,272.51 and 632.61 is: 948.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.15 : 1,272.51 = 632.61 : x
  2. Step 2: Convert to fraction form
    849.15/1,272.51 = 632.61/x
  3. Step 3: Cross multiply
    849.15x = 1,272.51 × 632.61
  4. Step 4: Simplify right side
    849.15x = 805,002.55
  5. Step 5: Solve for x
    x = 805,002.55/849.15
  6. Step 6: Final answer
    x = 948.01

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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.