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Finding the Fourth Proportional to 945.32, 1,418.08 and 251.99

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Solution

The fourth proportional to 945.32, 1,418.08 and 251.99 is: 378.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.32 : 1,418.08 = 251.99 : x
  2. Step 2: Convert to fraction form
    945.32/1,418.08 = 251.99/x
  3. Step 3: Cross multiply
    945.32x = 1,418.08 × 251.99
  4. Step 4: Simplify right side
    945.32x = 357,341.98
  5. Step 5: Solve for x
    x = 357,341.98/945.32
  6. Step 6: Final answer
    x = 378.01

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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.