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Finding the Fourth Proportional to 554.09, 763.91 and 454.13

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Solution

The fourth proportional to 554.09, 763.91 and 454.13 is: 626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.09 : 763.91 = 454.13 : x
  2. Step 2: Convert to fraction form
    554.09/763.91 = 454.13/x
  3. Step 3: Cross multiply
    554.09x = 763.91 × 454.13
  4. Step 4: Simplify right side
    554.09x = 346,911.76
  5. Step 5: Solve for x
    x = 346,911.76/554.09
  6. Step 6: Final answer
    x = 626.10

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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.