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Finding the Fourth Proportional to 751.58, 1,126.61 and 361.01

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Solution

The fourth proportional to 751.58, 1,126.61 and 361.01 is: 541.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.58 : 1,126.61 = 361.01 : x
  2. Step 2: Convert to fraction form
    751.58/1,126.61 = 361.01/x
  3. Step 3: Cross multiply
    751.58x = 1,126.61 × 361.01
  4. Step 4: Simplify right side
    751.58x = 406,717.48
  5. Step 5: Solve for x
    x = 406,717.48/751.58
  6. Step 6: Final answer
    x = 541.15

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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.