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Finding the Fourth Proportional to 1,046.90, 1,572.55 and 884.90

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Solution

The fourth proportional to 1,046.90, 1,572.55 and 884.90 is: 1,329.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.90 : 1,572.55 = 884.90 : x
  2. Step 2: Convert to fraction form
    1,046.90/1,572.55 = 884.90/x
  3. Step 3: Cross multiply
    1,046.90x = 1,572.55 × 884.90
  4. Step 4: Simplify right side
    1,046.90x = 1,391,549.50
  5. Step 5: Solve for x
    x = 1,391,549.50/1,046.90
  6. Step 6: Final answer
    x = 1,329.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.