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Finding the Fourth Proportional to 882.93, 1,218.28 and 572.25

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Solution

The fourth proportional to 882.93, 1,218.28 and 572.25 is: 789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.93 : 1,218.28 = 572.25 : x
  2. Step 2: Convert to fraction form
    882.93/1,218.28 = 572.25/x
  3. Step 3: Cross multiply
    882.93x = 1,218.28 × 572.25
  4. Step 4: Simplify right side
    882.93x = 697,160.73
  5. Step 5: Solve for x
    x = 697,160.73/882.93
  6. Step 6: Final answer
    x = 789.60

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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.