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Finding the Fourth Proportional to 934.88, 1,288.12 and 802.08

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Solution

The fourth proportional to 934.88, 1,288.12 and 802.08 is: 1,105.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.88 : 1,288.12 = 802.08 : x
  2. Step 2: Convert to fraction form
    934.88/1,288.12 = 802.08/x
  3. Step 3: Cross multiply
    934.88x = 1,288.12 × 802.08
  4. Step 4: Simplify right side
    934.88x = 1,033,175.29
  5. Step 5: Solve for x
    x = 1,033,175.29/934.88
  6. Step 6: Final answer
    x = 1,105.14

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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.