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Finding the Fourth Proportional to 949.80, 1,423.35 and 372

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Solution

The fourth proportional to 949.80, 1,423.35 and 372 is: 557.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.80 : 1,423.35 = 372 : x
  2. Step 2: Convert to fraction form
    949.80/1,423.35 = 372/x
  3. Step 3: Cross multiply
    949.80x = 1,423.35 × 372
  4. Step 4: Simplify right side
    949.80x = 529,486.20
  5. Step 5: Solve for x
    x = 529,486.20/949.80
  6. Step 6: Final answer
    x = 557.47

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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.