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Finding the Fourth Proportional to 720.06, 1,079.28 and 334.50

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Solution

The fourth proportional to 720.06, 1,079.28 and 334.50 is: 501.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.06 : 1,079.28 = 334.50 : x
  2. Step 2: Convert to fraction form
    720.06/1,079.28 = 334.50/x
  3. Step 3: Cross multiply
    720.06x = 1,079.28 × 334.50
  4. Step 4: Simplify right side
    720.06x = 361,019.16
  5. Step 5: Solve for x
    x = 361,019.16/720.06
  6. Step 6: Final answer
    x = 501.37

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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.