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Finding the Fourth Proportional to 922.39, 1,272.82 and 524.01

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Solution

The fourth proportional to 922.39, 1,272.82 and 524.01 is: 723.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.39 : 1,272.82 = 524.01 : x
  2. Step 2: Convert to fraction form
    922.39/1,272.82 = 524.01/x
  3. Step 3: Cross multiply
    922.39x = 1,272.82 × 524.01
  4. Step 4: Simplify right side
    922.39x = 666,970.41
  5. Step 5: Solve for x
    x = 666,970.41/922.39
  6. Step 6: Final answer
    x = 723.09

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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.