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Finding the Fourth Proportional to 554.83, 765.36 and 345.04

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Solution

The fourth proportional to 554.83, 765.36 and 345.04 is: 475.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.83 : 765.36 = 345.04 : x
  2. Step 2: Convert to fraction form
    554.83/765.36 = 345.04/x
  3. Step 3: Cross multiply
    554.83x = 765.36 × 345.04
  4. Step 4: Simplify right side
    554.83x = 264,079.81
  5. Step 5: Solve for x
    x = 264,079.81/554.83
  6. Step 6: Final answer
    x = 475.97

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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.