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Finding the Fourth Proportional to 772.98, 1,066.31 and 524.39

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Solution

The fourth proportional to 772.98, 1,066.31 and 524.39 is: 723.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.98 : 1,066.31 = 524.39 : x
  2. Step 2: Convert to fraction form
    772.98/1,066.31 = 524.39/x
  3. Step 3: Cross multiply
    772.98x = 1,066.31 × 524.39
  4. Step 4: Simplify right side
    772.98x = 559,154.35
  5. Step 5: Solve for x
    x = 559,154.35/772.98
  6. Step 6: Final answer
    x = 723.37

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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.