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Finding the Fourth Proportional to 914.67, 1,372.40 and 606.63

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Solution

The fourth proportional to 914.67, 1,372.40 and 606.63 is: 910.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.67 : 1,372.40 = 606.63 : x
  2. Step 2: Convert to fraction form
    914.67/1,372.40 = 606.63/x
  3. Step 3: Cross multiply
    914.67x = 1,372.40 × 606.63
  4. Step 4: Simplify right side
    914.67x = 832,539.01
  5. Step 5: Solve for x
    x = 832,539.01/914.67
  6. Step 6: Final answer
    x = 910.21

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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.