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Finding the Fourth Proportional to 630.49, 942.99 and 369.87

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Solution

The fourth proportional to 630.49, 942.99 and 369.87 is: 553.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.49 : 942.99 = 369.87 : x
  2. Step 2: Convert to fraction form
    630.49/942.99 = 369.87/x
  3. Step 3: Cross multiply
    630.49x = 942.99 × 369.87
  4. Step 4: Simplify right side
    630.49x = 348,783.71
  5. Step 5: Solve for x
    x = 348,783.71/630.49
  6. Step 6: Final answer
    x = 553.19

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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.