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Finding the Fourth Proportional to 914.82, 1,372.58 and 549.87

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Solution

The fourth proportional to 914.82, 1,372.58 and 549.87 is: 825.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.82 : 1,372.58 = 549.87 : x
  2. Step 2: Convert to fraction form
    914.82/1,372.58 = 549.87/x
  3. Step 3: Cross multiply
    914.82x = 1,372.58 × 549.87
  4. Step 4: Simplify right side
    914.82x = 754,737.82
  5. Step 5: Solve for x
    x = 754,737.82/914.82
  6. Step 6: Final answer
    x = 825.01

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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.