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Finding the Fourth Proportional to 966.94, 1,334.40 and 541.55

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Solution

The fourth proportional to 966.94, 1,334.40 and 541.55 is: 747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.94 : 1,334.40 = 541.55 : x
  2. Step 2: Convert to fraction form
    966.94/1,334.40 = 541.55/x
  3. Step 3: Cross multiply
    966.94x = 1,334.40 × 541.55
  4. Step 4: Simplify right side
    966.94x = 722,641.61
  5. Step 5: Solve for x
    x = 722,641.61/966.94
  6. Step 6: Final answer
    x = 747.35

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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.