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Finding the Fourth Proportional to 756.61, 1,044.53 and 697.33

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Solution

The fourth proportional to 756.61, 1,044.53 and 697.33 is: 962.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.61 : 1,044.53 = 697.33 : x
  2. Step 2: Convert to fraction form
    756.61/1,044.53 = 697.33/x
  3. Step 3: Cross multiply
    756.61x = 1,044.53 × 697.33
  4. Step 4: Simplify right side
    756.61x = 728,376.66
  5. Step 5: Solve for x
    x = 728,376.66/756.61
  6. Step 6: Final answer
    x = 962.69

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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.