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Finding the Fourth Proportional to 910.42, 1,248.17 and 894.02

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Solution

The fourth proportional to 910.42, 1,248.17 and 894.02 is: 1,225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.42 : 1,248.17 = 894.02 : x
  2. Step 2: Convert to fraction form
    910.42/1,248.17 = 894.02/x
  3. Step 3: Cross multiply
    910.42x = 1,248.17 × 894.02
  4. Step 4: Simplify right side
    910.42x = 1,115,878.23
  5. Step 5: Solve for x
    x = 1,115,878.23/910.42
  6. Step 6: Final answer
    x = 1,225.68

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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.