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Finding the Fourth Proportional to 471.02, 649.81 and 284.51

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Solution

The fourth proportional to 471.02, 649.81 and 284.51 is: 392.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.02 : 649.81 = 284.51 : x
  2. Step 2: Convert to fraction form
    471.02/649.81 = 284.51/x
  3. Step 3: Cross multiply
    471.02x = 649.81 × 284.51
  4. Step 4: Simplify right side
    471.02x = 184,877.44
  5. Step 5: Solve for x
    x = 184,877.44/471.02
  6. Step 6: Final answer
    x = 392.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.