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Finding the Fourth Proportional to 910.57, 1,248.39 and 894.16

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Solution

The fourth proportional to 910.57, 1,248.39 and 894.16 is: 1,225.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.57 : 1,248.39 = 894.16 : x
  2. Step 2: Convert to fraction form
    910.57/1,248.39 = 894.16/x
  3. Step 3: Cross multiply
    910.57x = 1,248.39 × 894.16
  4. Step 4: Simplify right side
    910.57x = 1,116,260.40
  5. Step 5: Solve for x
    x = 1,116,260.40/910.57
  6. Step 6: Final answer
    x = 1,225.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.