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Finding the Fourth Proportional to 934.13, 1,394.95 and 880.13

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Solution

The fourth proportional to 934.13, 1,394.95 and 880.13 is: 1,314.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.13 : 1,394.95 = 880.13 : x
  2. Step 2: Convert to fraction form
    934.13/1,394.95 = 880.13/x
  3. Step 3: Cross multiply
    934.13x = 1,394.95 × 880.13
  4. Step 4: Simplify right side
    934.13x = 1,227,737.34
  5. Step 5: Solve for x
    x = 1,227,737.34/934.13
  6. Step 6: Final answer
    x = 1,314.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.