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Finding the Fourth Proportional to 472.15, 651.37 and 340.87

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Solution

The fourth proportional to 472.15, 651.37 and 340.87 is: 470.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.15 : 651.37 = 340.87 : x
  2. Step 2: Convert to fraction form
    472.15/651.37 = 340.87/x
  3. Step 3: Cross multiply
    472.15x = 651.37 × 340.87
  4. Step 4: Simplify right side
    472.15x = 222,032.49
  5. Step 5: Solve for x
    x = 222,032.49/472.15
  6. Step 6: Final answer
    x = 470.26

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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.