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Finding the Fourth Proportional to 554.90, 834.20 and 552.20

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Solution

The fourth proportional to 554.90, 834.20 and 552.20 is: 830.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.90 : 834.20 = 552.20 : x
  2. Step 2: Convert to fraction form
    554.90/834.20 = 552.20/x
  3. Step 3: Cross multiply
    554.90x = 834.20 × 552.20
  4. Step 4: Simplify right side
    554.90x = 460,638.31
  5. Step 5: Solve for x
    x = 460,638.31/554.90
  6. Step 6: Final answer
    x = 830.14

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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.