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Finding the Fourth Proportional to 935.03, 1,290.71 and 683.18

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Solution

The fourth proportional to 935.03, 1,290.71 and 683.18 is: 943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.03 : 1,290.71 = 683.18 : x
  2. Step 2: Convert to fraction form
    935.03/1,290.71 = 683.18/x
  3. Step 3: Cross multiply
    935.03x = 1,290.71 × 683.18
  4. Step 4: Simplify right side
    935.03x = 881,787.26
  5. Step 5: Solve for x
    x = 881,787.26/935.03
  6. Step 6: Final answer
    x = 943.06

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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.