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Finding the Fourth Proportional to 966, 1,332.51 and 634.56

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Solution

The fourth proportional to 966, 1,332.51 and 634.56 is: 875.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    966 : 1,332.51 = 634.56 : x
  2. Step 2: Convert to fraction form
    966/1,332.51 = 634.56/x
  3. Step 3: Cross multiply
    966x = 1,332.51 × 634.56
  4. Step 4: Simplify right side
    966x = 845,557.55
  5. Step 5: Solve for x
    x = 845,557.55/966
  6. Step 6: Final answer
    x = 875.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.