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Finding the Fourth Proportional to 914.01, 1,371.25 and 524.20

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Solution

The fourth proportional to 914.01, 1,371.25 and 524.20 is: 786.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.01 : 1,371.25 = 524.20 : x
  2. Step 2: Convert to fraction form
    914.01/1,371.25 = 524.20/x
  3. Step 3: Cross multiply
    914.01x = 1,371.25 × 524.20
  4. Step 4: Simplify right side
    914.01x = 718,802.39
  5. Step 5: Solve for x
    x = 718,802.39/914.01
  6. Step 6: Final answer
    x = 786.43

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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.