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Finding the Fourth Proportional to 767.57, 1,151.55 and 402.26

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Solution

The fourth proportional to 767.57, 1,151.55 and 402.26 is: 603.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.57 : 1,151.55 = 402.26 : x
  2. Step 2: Convert to fraction form
    767.57/1,151.55 = 402.26/x
  3. Step 3: Cross multiply
    767.57x = 1,151.55 × 402.26
  4. Step 4: Simplify right side
    767.57x = 463,216.75
  5. Step 5: Solve for x
    x = 463,216.75/767.57
  6. Step 6: Final answer
    x = 603.49

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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.