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Finding the Fourth Proportional to 756.17, 1,043.36 and 437.09

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Solution

The fourth proportional to 756.17, 1,043.36 and 437.09 is: 603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.17 : 1,043.36 = 437.09 : x
  2. Step 2: Convert to fraction form
    756.17/1,043.36 = 437.09/x
  3. Step 3: Cross multiply
    756.17x = 1,043.36 × 437.09
  4. Step 4: Simplify right side
    756.17x = 456,042.22
  5. Step 5: Solve for x
    x = 456,042.22/756.17
  6. Step 6: Final answer
    x = 603.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.