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Finding the Fourth Proportional to 720.66, 1,079.17 and 501.02

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Solution

The fourth proportional to 720.66, 1,079.17 and 501.02 is: 750.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.66 : 1,079.17 = 501.02 : x
  2. Step 2: Convert to fraction form
    720.66/1,079.17 = 501.02/x
  3. Step 3: Cross multiply
    720.66x = 1,079.17 × 501.02
  4. Step 4: Simplify right side
    720.66x = 540,685.75
  5. Step 5: Solve for x
    x = 540,685.75/720.66
  6. Step 6: Final answer
    x = 750.26

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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.