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Finding the Fourth Proportional to 472.77, 651.78 and 353.03

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Solution

The fourth proportional to 472.77, 651.78 and 353.03 is: 486.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.77 : 651.78 = 353.03 : x
  2. Step 2: Convert to fraction form
    472.77/651.78 = 353.03/x
  3. Step 3: Cross multiply
    472.77x = 651.78 × 353.03
  4. Step 4: Simplify right side
    472.77x = 230,094.63
  5. Step 5: Solve for x
    x = 230,094.63/472.77
  6. Step 6: Final answer
    x = 486.69

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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.