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Finding the Fourth Proportional to 913.41, 1,260.51 and 714.46

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Solution

The fourth proportional to 913.41, 1,260.51 and 714.46 is: 985.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.41 : 1,260.51 = 714.46 : x
  2. Step 2: Convert to fraction form
    913.41/1,260.51 = 714.46/x
  3. Step 3: Cross multiply
    913.41x = 1,260.51 × 714.46
  4. Step 4: Simplify right side
    913.41x = 900,583.97
  5. Step 5: Solve for x
    x = 900,583.97/913.41
  6. Step 6: Final answer
    x = 985.96

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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.