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Finding the Fourth Proportional to 966.06, 1,332.45 and 716.58

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Solution

The fourth proportional to 966.06, 1,332.45 and 716.58 is: 988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.06 : 1,332.45 = 716.58 : x
  2. Step 2: Convert to fraction form
    966.06/1,332.45 = 716.58/x
  3. Step 3: Cross multiply
    966.06x = 1,332.45 × 716.58
  4. Step 4: Simplify right side
    966.06x = 954,807.02
  5. Step 5: Solve for x
    x = 954,807.02/966.06
  6. Step 6: Final answer
    x = 988.35

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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.