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Finding the Fourth Proportional to 764.04, 1,145.74 and 302.04

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Solution

The fourth proportional to 764.04, 1,145.74 and 302.04 is: 452.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.04 : 1,145.74 = 302.04 : x
  2. Step 2: Convert to fraction form
    764.04/1,145.74 = 302.04/x
  3. Step 3: Cross multiply
    764.04x = 1,145.74 × 302.04
  4. Step 4: Simplify right side
    764.04x = 346,059.31
  5. Step 5: Solve for x
    x = 346,059.31/764.04
  6. Step 6: Final answer
    x = 452.93

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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.